97 5s into a 95 5s Options

[JuMPiiN]

I just want to be 100% positive that it will be plug and play. taking out the old putting in the new. I decided to go ahead and put another few 100$ into the car and make it run again, Getting it for a good price and just needs the seals replaced, new oil pump, and water pump, and of course new belts.

Basically what im asking is that it should be all plug and play now wiring needed. If theres some thats fine, But it should be just pulling the old putting in the new and plugging everything in right lol ?

[Batman722]

if you're using the 97 wiring harness w/97ecu with the 97 engine (and the 97 accessories like the dizzy) then is shouldn't be a problem.
The OBII won't work (unless you wire it in from the interior plugs - 4 wires simple) but it's not a big deal unless you get a CEL and have to check your codes, so I would reccomend doing that.
If you use the 97 engine with a 95 harness then some things will need to be swapped over like the dizzy, egr, couple other little things, I can't remember off hand.

if you can get a 97 5s w/wiring harness and ECU then put it in.