Hmmm... How 'bout a 2.2/2.5 turbo in an early A?

to get a 2.2L over 400HP with a 8v head you will need around 30-35psi thats with a ported bigvalve custom intake and header ect even the DOHC TIII need alot of boost to get 400HP the problem isnt that the engine its self its the piss poor flowing head. As an example a simualr nissan will make 400HP with 20ish lbs of boost.

If you really want to go with a 2.2 go with a T3 DOHC they are harder to find but its easier to make power with them.

If you want a manual the turbo supra trans will bolt to a dakota 5speed bellhouseing but there are several bellhousings made but only one works

I have a 92 dodge spirit r/t stock longblock with 150k 2cyl with 90psi i ran 12.1 @115 coasting thru on 23lbs of boost pig rich iam guessing iam around 360-370whp car weight 3300lbs

The cool thing about the 4cyl turbo mopars is they always make more HP then trq unlike a honda with 4000hp and 25ftlbs
PM if you want some more info