just need to know if the plugs on the P72(obd 1 GSR) and the P28 are the same... was looking for a post that had pics of the different ECUs next to eachother but couldnt find it .... also will the engine harness from an OBD 1 GSR plug at the fire wall to the harness on a 93 del sol si
thanks

 

The plugs are the same shape, the pin outs may be different though

 

pinouts are the same as well:

 

OBDI DOHC VTEC Preludes as well. That's why a P72 is plug and play in a Prelude also.

 

thats right.

 

good looking out Katman.