I am selling my Edelbrock RPM (non smog)heads that have been ported and polished. The cheap Edelbrock springs have been replaced with Comp Cams dual springs.Valve sizes are 1.90" intake and 1.60 exhaust,all straight.Recent valve job(less then 400 miles ago)Heads were just surfaced for straightness,NO CRACKS. Have about $1,000 in porting and hardware.Came off my 347 stroker.Asking $900.00