i have a 383 short block with 4340 eagle crank and h-beam 3d rods and srp pistons. the block is an 80 model with dipstick on the pass. side. the block is 4 bolt main is .030 over bored and honed with torque plates. the mains have been aligned honed. the only catch is the block has i think 2 stripped head bolt holes but i will give you a tool made by manley that makes sure you get the holes straight for the heli-coils. email me if interested.