Has anyone done a 6spd conversion?

[CobraII76]

Well like I said I have the Richmond 6 also I've never looked at the t-56 until the last week or so for another project. I got my richmond pretty cheap for the simple fact the guy who bought it in the first place ordered some strange gear combo's for it. and his SBC was not up to the task of a 4.07 first (killer hole shot) 2.56 second so basically my 6 is a 5 speed I have the .62 final and I'm running a 3.55 center section in the rear on the street. It's turning 2250 RPM at 70MPH. I found a T-56 (gm) this last week rather cheap that I may dump into the wifes car mild 351 and all street cruising use. The T-56 is probably fine for most people but from what I've been reading about parts and what I have to do to swapto the T-56. The Richmond may come out cheaper in the end.