Where can I find oversized valves that aren't as expensive as the ones MP sells? I would try stock replacement valves.

catfan@radiks.net

Egge Machine is one source, check the the "Slantsickness" article (Nov. 2000) for info.
Use the search function for more info.
DD

I used Phord windsor 1.78" intakes and small block Shivvy 1.50" exhaust in my "Screamin' Six" /6. They are about .100" longer than stock and have 11/32" stems. And I used stock replacement 340 springs with dampers.