I have a 18 spline 4 speed with a b body tailshaft. You'll need an A body tailshaft and main shaft to have it install in an A body. You can also use a B/E tailshaft and modify the shifter mounting location for A body. I picked this up with the intention on using it in my 70 Dart, but found a complete A body setup, instead. It turns freely, and visually it looks great, but that is the extent on what I know. I will put it on a pallet and build a crate around it and ship it FedEx Freight. Looking to get $1,800 SHIPPED to the lower 48 OR $1,500 picked up.