Better Head Option?
http://www.texas-speed.com/p-1172-pr...-castings.aspx
Although if you haven't bought springs yet I'd consider just buying them new from TSP, they'd only be $220 more for new heads and less when you add the cost of shipping your old heads to them.
http://www.texas-speed.com/p-4345-pr...-outright.aspx

