I was disappointed with the lack of intercooler options too, but worked out that with minor modifications, an escort cosworth one fits, and I paid 70 for mine, but currently can only find one for 129.
https://www.ebay.co.uk/itm/120931632430 ... 5043561077I cut down both pipes to 3 inches, turned it upside down with the pipes facing the front of the car at the bottom. Cut off the side brackets, and unbolted the inside headlight brackets so I could move them back by an inch, then bent into position so headlight aim not affected - remounted that as they are self tapping bolts.
Got two 180 degree silicon pipes that go from 3 inch to two inch diameter to connect to the existing pipework, a length of two inch aluminium tubing with a 15 degree bend for the turbo side. It is an incredibly tight fit but it works really well and this intercooler is all aluminium - no plastic sides so it can handle whatever it gets pressure wise.
I also removed the horn and relocated it to the engine bay. A 2 inch 13mm bolt with rubber stop on the end is more than enough to keep the top of the intercooler from tilting forward - May make some bracket for the bottom but it does /not move and rests on the existing intercooler / radiator bracket.

