I am in the middle of a carbbed 351w swap in my Capri. I also have a 4:30 gear. This is a steet/strip application. I have no real trans. How much pain is an AOD in a carbbed car? O/D would sure be nice. Will it hold up without great expensive internals? Should I do a c4 instead? OPINIONS? I have a 66 mustang c4 with the wimpy 22 (I think thats what I counted, I forget now) spline input. Two other thoughts are: I am gonna run full length headers and I am gonna rebuild my own trans, as I do it all day at work.