I have spent hours on porting and polishing a plenum that I got from someone I know. Well after I got all done I put it next to my plenum thats still in my car and they are different the top is totally different the bottom is different and looks slighty shorter. The driver side has a hole for the cold start which I dont have in my car now Can I use this plenum, or get rid of it port and polish my original stuff?

 

I believe you can get a block off plate for the cold start. What does the front of it look like?(throttle body opening?) You can cover that little extra hole in the front with a 91 and up throttle body gasket.

 

it looks different on the top corners by the throttlebody