I just installed a full Timevalve stainless system in my '67 230S last weekend.
It went in very well and the fit up around the exhaust manifold was really great. No chance my local exhaust shop could have pulled that off. Also, the guys at Timevalve built it from 300SE-spec tubing which is slightly larger... saved me the hassle of going the dual exhaust route and might give me an extra 0.75 horsepower.
100% positive results.
Randy
www.bringatrailer.com
The Green Fintail Rallymobile