Stephen, when looking deeper into this I thought it might be good to do some comparing. The big thing is cost issues for a lot of people when doing an upgrade like this. In comparison we will leave driveshaft mods out because all options will most likely require modifications. Atlas- will cost anywhere from $2100 to $2500. I believe it is a bolt in for most applications. Klune- cost is around $1500 to $1800 and the 2.7/1 is a bolt in for quite a few applications. Doubler- Kit price is $740, shifter is $250 for the triple stick. Most will need t cases and we will use my set up as an example but you will have to fill in the cost. th350 203- easy to find and cheap. We will figure $100 for the case. Cost to change the input shaft to bolt it to a th400/208=? Cost to redrill the case=? Can I use my factory adapter and if not cost=? SM465/205- cheep and easy to find in fixed rear yoke= $100 Input shaft=? modifications needed to use in this combo=? 32 spline front output conversion=? I think I got it all and if not I'm sure you can fill us in. Also could the back yard mechanic do any mods himself easily like redrilling the 203? Shipping t cases will really drive the cost up. Let me know what you think and this would be starting with a th400/241 combo with an SYE kit.