Octane

It's a colt engine. It'll have it's engine code stamped on the block/head somewhere. I'm a mitsubishi guy but I can't tell exactly WHAT engine it is since all the 4G3x engines look very similar. I'd put money on it being the 1.6 though.

The McLaren F1, Bugatti EB110 and Several TVR models used Volkswagen Corrado mirrors.

It should be the same type of valve that the 1st generation DSM cars came with. If that's the case I used to run 18psi through an EvoIII Big 16g on an un-crushed valve with no issues on one of my Talon's. With a proper crush mod I would wager it's probably good to about 25psi (depending on your turbo).