I have a complete 4.3 with rebuilt vortec heads that have a adjustable rocker studs, guide plates and 600 lift springs. 1.6 raito Comp Cams roller tip rocker arms. A edlebrock 2111 intake and 600 CFM Holley carb. A nice roller cam. Everything above is new with probably 4 hrs on it. The bad is it has a rod knock and will need attention. I am selling this as it comes out of the boat. All accessories and exhaust will come with it.