Thanks, but that wouldn't be legal for my application. I'm looking into a legal combo for IHRA Stock crate motor and the valves have to have OEM head and stem diameters as well as being steel. If available, a slightly longer valve might help with valve spring selection for the pressures I want to run. But I'd have to see how that would affect rocker arm geometry too. If it gets to be too complicated, I'll just stick with OEM lengths and look into other extra spring installed height options as well as who has the best prices.