Originally Posted by opious
thanks so much for all the input! anyone know which engines are direct bolt on? the ej25 would be nice, but wouldn't i have to replace the exhaust headers at the very least?
Ya, I guess you would have to replace the header section... But you can get those basically for free from club members
All EJ motors are "bolt on" motors, the problem is the wiring and ECU's. Im not sure of the wiring involved with the EJ22 to EJ25 upgrade is, but it might not be complicated at all and the ECU might even be able to run the EJ25.