I've been digging around for exhaust components and still trying to sort out a way to get a more exotic sound out of a pushrod V8 without breaking the bank doing a full rebuild to shorten the stroke and some kind of -plane crank. Most folks prefer the V8 rumble, but I'm just really disappointed with pretty much every commercial modern exhaust I've heard made for V8. Too much in-your-face tuba and trombone. I happened across Celeritech Exhaust, and that's the sound I'm going for. They look pretty new or at least not very well known. Anyone know about them? After examining their setup I figure an 8-4-1 wouldn't be any more of a pain to make than a full custom exhaust for the SL-C anyway, just add a cat and a pair of Valvetronic mufflers to the mix. I've sent them a note, we'll see what they offer.