would i make more power putting it a little past wehre the cat would be with longtubes? or wuold i lose hp? (im just wanting it to be loud as hell when i open it up...will it make much of a diff. from right there at the cat vs before the overtheaxle sound wise?

 

It might make a slight difference in noise but i don't think you would be able to tell the difference. There would be more vibration though on your seat if you did it that way. As for hp it won't make a difference imo.