i contacted trickflow about making heads for the nail. very nice guy but i forget his name. that is typical now days for me. any way it cost 125k to 150k or more for research. i gave him tom t info and russell martin out of calif info. also he ask what groups to come to, so they can see the demand for heads. i gave him this group the buickperformancegroup and nailhead on yahoo. told him about the nationals this august. i also told them they could use my vehicle if they need one. also i told him the uproar over edelbrock making 409 heads and that there were more nails than w's made. so if you want the possible last chance of a major company, not the biggest to invest in the nail get a hold of trickflow.com. they are in northern ohio. they need to know there is a market for them. jim