I have a set of zz4 angle plug heads for sale. I replaced the engine in my truck about a month ago and have the zz4 in parts for sale. Block was magniflunxed and checked for cracks and heads checked over good and reworked at NAPA in Kings Mountain. I do have all the other parts (crank,pistons,lifters and so on) that came out of this engine in good shape. Heads are corvette angle plug design with D shape exhaust ports, 170cc intake runners, 1.94 intake and 1.60 exhaust valves. Heads are ready to bolt on and go I also have a set of ARP head studs to go with the heads that were installed for only about 1500 miles. Original engine had @70,000 miles when removed. Asking $800 obo for heads and $1100 obo for the whole thing, Will part if I need to just make offer.