Converting a 63 Dart wagon to 4 speed

As K frame 67 and newer is best u can get factory race mount and 68 and newer use a idler arm that will keep u straight going down any street road . O hiway will keep tire down if u get anyone that can align these cars I have aligned 4 over 30 years any mopar is a *****. but I own I do. on 63 -66 buy after market mounts then weld together. had one I think of all these even 70 hemi b 1 AAR . rest darts big block and cudas.