I actually registered just to talk to you lol. I am picking up a 1988 5.0 GT later today and this is my first Mustang. I am going to have to tear into the top of the engine to find out why this thing is knocking and figured I would look into this head swap that I keep hearing about. I was just informed about this today when speaking to the current owner of the vehicle and he said he had planned to do it. However you seem to know much more about it than he does. I am a junk yard junkie lol so looking for the heads isn't going to be a big deal for me, I just want to make sure I am looking for the right heads for my 5.0. This car was recently bought by him, and he ran into some issue and is now selling it to me, so he hasn't even got to get into it yet. So everything is stock, and I am going to have to tear into it anyway so I am looking for easy upgrades while I am working on it. Any suggestions?