Nick, I put a chrome 4 into 1 header & a Monza exhaust on my Tii 2002 BMW, that thing sounded mean. JC whitney online might have a hp exhaust for your car too, they have a twin chrome tips and are painted w/ black wrinkle paint, they also come on Ferrari's and cars like that.
My #1 Sams drag engine keeps eating clutch racing springs, one at a time,lol. I just got 3 more stock Cag clutches and 3 Zenoah scooter clutches at Dave's last week for $2 each. I leave the center piece on and change the bolts, shoes & springs that way don't have to take it off the clutch off. I have two 2 shoe, 2 spring racing clutches for later when there both in the 2 engine drag bike.
Sam,s Red Stocker engine, still on the stand, I stole the 14/14 today and put it on my avatar bike, haven't finished yet, tomorrow, Sams #2 eng. Checked the head bolts & plug, all looks good, just not running right w/ the Walbro 16mm, can't get it to adj.. Its a new copy carb, on a new engine, Sam put it there, took it off all the gaskets and CF reeds and they look good. Has no boosting fitting in the alum walbro manifold, and the 14/14 does, and it ran so good on the red engine, so it is a Test, is it the Walbro or not is the Question,lol. I am just trying to set the rings on the engines. All 5 of my running engines are new.
Going to build a 40cc Cag hopped up eng w/ ADA cyld and head I got at the orphan sell. Using the cases from the twisted crank engine, looking to lighten everything and try for some High RPMs, have new bearings and seals from PB Parts tomorrow, also got front & rear hydraulic brake upgrade kits for PB too. Don't think they will fit the C1, but they will fit the A2 Cag. Man, I got alot of work to do.