Dove makes them rather infrequently. I've heard there are a few other player's about to come in to the market.
You would need the timing cover, timing cover back plate, chain guides, chains, tensioners, rockers, shafts, cams, gears, intake manifold, gaskets, pistons, valves, valve covers, dip stick tube, water pump, fuel pump, external
oil drain back lines or drill the block and misc. bolts.
Are you trying to piece one together?
Rob