I was going to bid on those but I just couldn't justify spending that kind of money on something that wouldn't increase hp. That's just my thought though!!!
LOL thats insane....probably cost the guy less then $75 to build em.....and sound the same as the benders! build em your self or get someone to do it for you. for no HP gain...they just aint worth a fraction of that price....if you want sound gut your stock can.
One of my sleds has the can gutted and it sounds WICKED!! It's like an F1 fighter screaming across the field.... at least that's what my friends told me. Not for the faint of heart though, it is VERY LOUD.