I just did an l67 swap on my 99 gt and it wasnt bad at all but for the best info I would use John at intense racing. They always answer the phone and if they dont they call you back when you leave a message plus I havnt heard anything good AT ALL specifically about ZZP's tunes. The other thing that I forgot about was the wiring when I did my swap just make sure you order the l67 swap kit from one of the vendors its a little over 40 bucks shipped. Also on the tranny I would look for a 4t65e with 3.29 gears out of a 98 or newer gt or a 4t65 e hd out of a gtp. John can program the pcm for pretty much anything you need. Also make sure and pull all of the sensors out of your old engine with all of the wiring so you have everything to put back in the l67.
