I really appreciate all the help ya'll!!! I was looking for more information on the Keisler SS700 but I couldn't find much about it. One of the main reasons I was looking at the TKO 500 is
www.hurstdrivelines.com makes a transmission kit for the 1960-72 GM Trucks and it comes with everything for the swap, plus a manual is SOOOO much more fun than an auto!!!!!!

I just talked to the tech there and he said that they put one of those transmissions in they're '66 CHevy with the low tunnel and it fit just fine but I dont know if the tunnel is the same size on my '72 as it is on they're '66. Any idears????
www.billetworkstactical.com