The installation of the engine went reasonably smoothly apart from one unexpected problem. When I had the engine lined up with the gearbox and was easing it in I noticed that the bolts which hold the adapter plate onto the engine were in the way of the rear mounting bushings of the transaxle. After a bit of head scratching I decided to melt a small pocket out of the rubber for clearance of the bolt head with an old soldering iron.

I hired the engine hoist for £20 for the weekend, much easier than trying to balance it on a trolley jack like I did with the Alfa engine!

I jacked the car up high enough to slide the engine under the car.

Then I lowered the car back down over the engine and reattached the hoist to lift the engine into position. Everything went in easily, I didn't even have to remove the alternator for extra room.

The turbo manifold is the lowest part of the engine at the back, but the sump is slightly lower ahead of it.

Everything fits well, without the intercooler fitted!

So I had to cut some of the body away for clearance. In the speedster this is where some people (including me) fit the battery in a cubby hole behind the rear seat.

It takes up a lot of the space back there but not all, I will relocate the battery off to the side of the compartment which will mean extending it sideways under the wing. I will also make a fiberglass cover for the intercooler that is removable for future access. I plan to put the ECU and a few other bits of electronics back here so it will have to be watertight. The turbo is underneath this shelf so I'll have to put a decent heat shield below here, I'll also use thermal wrap on the turbo pipework.

Something that some people might like to note is that the subaru engine is quite short, shorter than the Alfa flat 4 anyway.

I used the original Subaru throttle cable and looped it back on itself underneath the inlet manifold.

Then I made a bracket to clamp the cable outer with a jubilee clip and joined the cables together with a bolt with a hole drilled through it. Not the most elegant connection but it is very solid and won't slip.

I have used the original manifold and two 2 1/2" mandrel bends and finally a straight through muffler.

The muffler fits nicely alongside the left cylinder head, but leaving a decent amount of clearance between it and the tyre.

Clearance is a bit tight by the rear shock, not too bad though.

The inlet pipework just fits underneath the rear frame.

The K&N filter will get a shield to protect it from debris from the rear wheel as well as heat from the exhaust.