stainless steel vs aluminized steel, mandrel bent vs regular bent

See, I have heard just as many horror stories about exhaust kits..not fitting, etc.

I would take a shot on a kit if I knew I was doing headers..as it stands I have no header pipes on the stock manifolds....but Iwas told that since I have J heads I may want to stay with them and not go headers...

If I got headers it would be Hooker Super Comps...