selling one new head ... has some light shipping damage and I imagine would need to be repaired...See pictures.There is one spot on the surface of the deck and 2 corners that looked visibly damaged. I believe this one has the lighter springs for 750 lift. but should be check out by your engine builder..... single head only . i do not have another one. (However there is another single posted on eBay to complete the set) If not I did call Pro maxx and they said they would sell a single to make it a matching set.