OK I am looking at replacing the stock 1997 exhaust manifolds with some stock 2000+ ones ( I know headers are better but no money right now). I have been looking around and I have seen peoples say that they are direct boltons and peoples say that thye dont fit to the Ypipe and you have to bend the AC lines. I Just want the final word, Are these direct bolt to the Y? I am not concerned with the AC tubing it bends so no biggie. Also Do I NEED the heat shields? Thanks in Advance as always..