I want the most hp out of it

Flow Master goto www.flowmastermufflers.com These mufflers add the most HP and sound the best also... Go with the 80 series they sound tizight

should I got with 2 1/4 pipe?? and I can put duel exhaust on it when the 80 series right??

if you get a flowmaster with the single inlet dual outlet you can run duals. I would recommend using 2 1/2" piping from the manifold and gut your cat converter and then get a flowmaster y pipe and run 2 mufflers instead of one.

but I amin Texas and we have to have cats

yeah you will still have the cat but you take a punch and hammer through the middle of it and make it straigt through.

to knock out all the honey comb?? I was lookin at the flowmaster'* and can I get one that fits my bonnie??

Flowmasters are junk, go with DynoMax or Magnaflow.

Actually flowmaster is not junk and neither are dynomax and magnaflow but I would recommend if you want maximun sound and power to go with a flowmaster 40 series instead of the 80 series.

what part of texas are you in?
all three of my p/u'* and all my dad'* trucks dont have cats
my bonneville is the only thing in the family with a cat