I new that the airbox would prove tricky to install and it was the case. As I'm installing an engine combination (parrallel valve 180hp with vertical induction injection) that Vans does not sell, the airbow has to be adapted.
The installation begins sith the bolting of a flat part to the injection block, then another part (with the flanges) is bolted to the first part. The second part has to be aligned horizontally end vertically with the scoop on the cowl.
The picture shows the two parts and the injection block.



And this is the scoop showing the correctly aligned part.



Then small clips that will hold the airfilter are installed on the lower part. One of the clips is not riveted its position will interfere with the mixture arm on the injection block.



The picture shows the airbox installed, the mixture lever has been removed and it'svtravel drawn on the box.



The kit includes a small part for my type of installation (quit cool on Vans side as they don't support my configuration).
The small part is to be riveted to the lower part to allow for full travel of the mixture lever.



But I still have a problem the cutout is not deep enough.
The solution is to fabricate a new upper plate with holes moved 3/4" to move the plate to the opposite side of the lever.



The cutting proved easy but I somehow managed to wrongly drill the holes for the lower plate and the alignment is not very good. I'll redo the plate as soon as I can get new raw material.

For the engine to turn it needs air, fuel and electricity.
Today I begin by tackling the fuel part, at least waht's forward of the firewall.
This is the hose between the gascolator and the mechanical engine driven fuel pump. The hose seems slightly long but the one supplied by Vans was too short and onl 1" shorter.



This is the other side of the mechanical pump. At the outlet I installed a T fitting on which there is a retrictor fitting an a hose where the fuel pressure will be measured. The hose I'm holding will get connected (via an elbow fitting) to the T, the other end of the hose will get connected to the throttle body.
In the background, the copper fitting is for the fuel pump overflow.



This is the throttle body with the hose coming from the mechanical fuel pump.



This is the back of the throttle body with the hose sending the metered fuel flow to the divider. I will replace the elbow fitting with a straight fitting.



And this is the divider on top of the engine.



And this is the end of the fuel pump overflow hose. I still have to attach it correctly.



The installation is only provisional, but took quite some time as ther are a lot of interferences, space is scarce and some parts still have to be bought.

The exhaut gets now bolted to the supports. After a few test installation of the lower cowl, vereything looks good. The gaps with the engine mount, cowl and fuselage are correct. next task is to verify the position of the heat muffs around the mufflers.
No problem on the right side, I even put some tube for test.



On the left side, the postion of the various flanges is interfering with the cowl or the engine mount. The solution is to unscrew it and turn it around.
This is with the screws off.



And again after being turned and the screws back on.



I have also installed the oil cooler on the aft baffle. I'm using large washers that have to be modified. I also installed the two fittings.

Before hanging the exhaust, there is some small work to be done on the support brackets. All parts get correctly marked before all is uninstalled.
The orange tubing will be replaced once I receive the correct part.



The inox tubing tends to slip ou of the rubber tubing and to avoid this I made some small grooves with a saw blade while the tubes where turning in the drill press. It's not very professional but should be enough.
And to be on the safe side, I did a small flare on the end of the tubing.

I also riveted the camlock support strips to the fuselage. Before that I had sealed firewall and the fuselage side and lower skins.