My thanks to everyone who responded. I knew about the short and long tail on the 350's and mine is short. I had done a careful analyisis on the different auto tranny's some time ago and know I want to use a 350. I do not know anything at all about shift kits. It appears that some you must shift the tranny just as you would a straight gear. Have any of you used these kits and why and how did you like them? Thanks again for all the input. I have the use of a lift so I want to make this as in and out sort of a job as I can to avoid abusing the use of the lift. I expect to do the job within the next 4 to 6 weeks and will let you know how it comes out. Ray