Valve choices

How expensive do you think it is to cut down the LS valves, backcut them and have them trim the tips to length...? Plus you'll have to replace the guides to reduce the valve stems that much smaller than the OEM Slant size....Since you'd have to do that to use a 7MM valve as well, you might as well get all the benefits you can for not much more money, if any. Somebody on .org found a factory 7MM valve awhile back that would work. I'll try to find that thread and see what they used....Also, including valves with a 5/16" stem will open up your selection even more!