I love old racing parts and how they work (over a stock part) in a engine rebuild. NOS parts are the supreme find. When I see the vintage parts and accessories I've read about my entire life (in person) and hold these parts in my hand - it's like . . . wow ! XLR aluminum fork caps ! Iron XR pipes (new - in-the-box) !
These parts(new and used) show up on Ebay at insanely high prices - only to be purchased by the rich collector - and never (I suspect) by a real racer or current competitor.
$900.00 for these PB cams ?
$ 1,900.00 for these C-Grind KR cams ?
$350.00 + for this KR head ? That is cracked.
I can't afford this stuff. I suspect all were purchased to go on a museum bike? or to hang on the wall of a collection? The real racers know how to modify their engines, and they don't really need these parts. They've got the know-how. The $75.00 P cams work better anyway . . . Leineweber or Enfield has $500.00 lobes to cut your old cams, and degree and weld (J- Grind better than C anyway) With a modern flow bench, and some fixtures, modify your $100.00 K head to out flow the KR head. The rich guy takes the bolt-ons . . . the poor man takes the scrubs and makes his due. Knowledge is power . . . is money still in your pockets . . . for gas - or Sambos !