There is a block Assy on ebay w/o head, but with some accessories for 800 I believe. Also, used ones for $2000-2500 or so used (from Japan). I agree re rebuilding, especially assembling all "small" parts cost. Much better to buy either a used one (with accessories) or a new one $4100, or whatever mine cost, if less enough to warrant importing them. Those Jap engines used are usually under 60,000 miles and in good shape (with a warranty), so decent deal, IMHO. Make sure to get a "Tuff Pan" from Paul, however. The torque will twist the trans cases and wear the bearings and gears within 100,000 miles or so, I found, in 2wd and 4 wd, with the 4wd lasting 20% less miles all else the same. That was using AMSOIL trans (gear) oil..