I would say from personal experience (I just recently went through this deal myself) to go with 2 1/4 to 2 1/2 inch (no bigger than 2 1/2) pipes with a decent set of mufflers. I bought Summit's performance mufflers (they were like $15 a piece) and am really pleased with them. For once I bought the less expensive product and didn't pay more in the long run/wwwthreads_images/icons/cool.gif! As far as sound goes, they have a nice rumble to them but they aren't too loud and on the highway I don't even hear the exhaust over my tires... Good luck with whatever you decide to go with.
'78 Chevy Blazer w/300hp Goodwrench 350, SM465, NP205 T-case.
'61 Willys Utility Wagon w/Chevy 350, TH350 ,NP203 T-case, and a broken Ford 9" /wwwthreads_images/icons/crazy.gif.
'78 Chevy Blazer w/300hp Goodwrench 350, SM465, NP205 T-case.
'61 Willys Utility Wagon w/Chevy 350, TH350 ,NP203 T-case, and a broken Ford 9" /wwwthreads_images/icons/crazy.gif.