Dual Exhaust - 454 4x4

[Jim85IROC]

I'm trying to figure out what to do about an exhaust on my truck. Right now it's got a 2.5" dual exhaust that looks like it was done at a muffler shop. It was new when I bought the truck and was falling off a year later. I see a lot of dual exhaust kits out there but they all state that they're for small block applications. Is there a significant difference in the manifold collector location between a small block and big block?

I'm considering having an exhaust shop do it again, but I don't want to pay the money if I can help it, plus since this truck is !cats, I might have a hard time finding somebody to do it for me.

Assuming the small block kits will fit without major reconstruction, what brands do you suggest? So far I've found dynomax, hooker and Flowtech. I would expect the hooker and flowtech to be the same, but the hooker is $60 more.