I picked this thing up for 900 bucks. Came with spare block fully assembled. New engine has rod knock with only 7 miles on it so I'm thinking either wrong bearings or not torqued right. Either way I'm splitting it next weekend. Question would be since the heads are brand new and the block as well, would it be worth it to send to the machine shop? I pulled the oil pan and screen had some junk from the old engine. Pan looked good pistons and crank looked amazing.