I'm putting together a fuel headed alcohol combo to run the local heads-up, Q8 stuff. (1/8mile 2600lb door car, std deck KB, 4.5x4.310, 176 chamber BAE fuel heads, 14-71 SSI roots) The valve train that came with the engine package I bought as a starting point has woefully weak valve springs (290lbs) so I'm getting some real valve springs for it. I'm a little limited on spring choice with right around a 2.00 inch installed height what have you guys run with success? (the valves are Ti) It currently has StageV rockers for both intake and exhaust. Am I going to run into any issues with running 4-500lb springs with these rockers? I'm not too worried about the intakes as that's what a lot of people run, but will the shiny roller tipped StageV exhausts handle it? The exhaust pushrods are 7/16 single taper. However the intake pushrods are straight 3/8. Will 7/16 taper pushrods clear on this combo or am I stuck with the smaller pushrods? Thanks!