Im going to order a mustang 2 kit from speedway soon. It's going on a 1939 1/2 ton. I have the heidts crossmember already, just looking to order the rest of the components. Can anyone tell me if i need to go with stock width or the narrowed version? Also speedway offers different spring rates, any input on which one i'll need? IT's going to be fully boxed and have a 350 and a th350 or a 700r4.

heres the kit im thinking... http://www.speedwaymotors.com/Mustang-II-IFS-w-Tubular-Control-Arms-Stock-Springs-and-Spindles,2089.html