I am getting rid of all of my old parts and I have 9 different sets of used , reconditioned and new heads here priced from $ 400 a set . These are mostly used for racing purposes , however can be used on the street in a limited way . Valve sizes range from 43 x 38 up to 48 x 40 , springs are either vw or chevy , some are ported and some are std , all are bored for 94 or 96.5 mm , some are std length valves and some are 200 thou longer and all are in good condition . I also have IDA and IDF manifolds as welll as injection manifolds to suit mechanical or electronic . ROD , 02-42729920 .