I'm interested in picking up a set of GT40 or GT40P heads for my 92 LX. I have a few questions to ask before I make my decision 1. Which are better? GT40 or GT40P. I was under the impression that the GT40P breathe a little better but I have also heard that the original GT40 heads are better, b ut I do not know why. 2. If I get them off of a 302 explorer, can I just bolt them on and be done, with no problems? Or are there some kind of adjustments that I have to make before I can put them on my car. Are there any hookups that are on one car that aren't on the other? Or are there certain connections that need to be added? 3. Right now I have BBK shortie headers on my car. Is anyone running these headers with GT40 heads? I am concerned as to if there is going to be a problem with the spark plug set up on the car. 4. If I were to get a set, and have new valves and springs put on them, anyone have a ballpark as to what it would cost? Thanks in Advance!