Ed Morad has 2 4T65E-HD transmissions. One is from an 04 GTP with only 35k on it. He's asking $700. The other is from an 04 Impala SS with 75k, but the case is painted black and appears to have been rebuilt recently. He wants $575 for it. What will I need to do to the PCM if I were to put one of these transmissions in? Remember that I'm doing the L36 to L67 top swap in my 2001 GT. Also, which one should I go with? I wish I could afford a new transmission from Dave at TEP, but I'm a 20 year old student, and I just can't.