I can get a GTi-R ECU for 100 bucks from a guy locally is there a chance that it will go right into the harness on the 92 and what would happen if I ran 370cc injectors and stock MAF....I'm using the ECU for the timing part could I use a AFC to lean the fuel to the 370cc? any input will be appreciated

Just remember that it will be mapped for Japanese 100ron fuel(I think that's about 95ron in US)and set up for 440cc injectors,different inlet-engine pipe run and limited to 180km/hour.