Hi, I have a '70 Fastback with the Atlas style mufflers and am contemplating fitting some peashooters to the bike. I can't run the original exhaust pipes obviously so I will need a complete new system. I've heard/read that fitting of the exhaust pipes can be a problem. Does anybody have recommendations on which pipes/mufflers to purchase? Also, not that anybody really cares, but am I correct that early 70 Fastbacks were fitted with the Atlas style mufflers and that later 70's were fitted with the peashooters? Thanks, Rob