I had a WC 4cyc t5 behind my 306 in my 66 coupe. You can just put a 87-93 mustang4 cyc pilot bearing in and put i all together. I also liked 1st gear with the 4 cyc tranny. Like he said dont beat on it to much and it will last, The input shaft is smaller and the internals are not as strong but for daily driving its great.