Just thinking about what else I've dun to this car when I put the 4.11 rear in I did Hime joint adjustable upper trailing arms and square tube lowers. A aluminum girdled cover and a drive shaft hoop. When it got it's first 455 it also got a cross member from cross member.com the Hooker headers were from a chocho customs SS El Camino that had a Diesel and someone else put a 455 in it we put a SBC in it and I kept the headers I'm shore there's more I just don't remember when I get back on it I'll post pictures tho so you can chime in anytimeI'm not shore yet I need to see what it has I'm guessing it has 3.42? I'm thinking I'm going to run a 29-9-15 with a 3.73 but I'm not sure yet