I have a used D750 engine for sale if some one wishes to rebuild it. It has a newly rebuilt head with only 22 hours running time on it. Engine has 1735 hours on it and needs rings and pistons? Has a lot of blow by and smokes. Injector pump needs to be rebuilt/refurbished. Alternator seems to have low output only a few amps may need to be replaced or maybe it is a problem with my regulator? Any way I came across a low hour D750 engine so rather than rebuilding this one I just switched engines. Asking $800. Tom