You cant beat the quality of shift you get with a 4l65, no cutting like the 518,I do drive trains and transmission for a living,I wanted to do this earlier ,but Silver Sport Trans is the only game in town and they wont sell me parts, just a complete kit, thats fine that their business, I understand.. but I'm not gonna spend thousands.. this is actually a simple swap, Waited for someone else to make a bell...I talked to Stu before his passing, for alittle insight, to see if was pleased, he was more than happy, I have a gear vender in now, it works well, but clunky as heck.. This will be user friendly and a bolt in....