I installed a Pypes 2 1/2" X pipe system on my '68. System was a real bearcat to install. I had to "adjust" both over the axle pipes to get them to fit. Their Street Pro mufflers were too loud in the car. Changed them for Flowmaster 50's.
I went to local Meineke w my 69...a friends brother runs that shop...paid $500 (10 yrs ago) for a custom 2.5 inch system with H crossover...2 Flowmasters 40 ....then added chrome ends with dbl bend downs , botght from EBay, but looks like the original pipes behind rear wheels. didn't seem too hard for them to do...
