those old Wiscons are definitely past their prime, but to try to engineer anything else in there might be a bigger project than you think. Easier to recon'd what you have unless it's terminal..Sure getting the newer engine in there might be easy but making all the little stuff work out is what takes the most time..I just did a Fiat diesel replacement in an enclosed generator set, pulled it out and installed a Deere 4045, easy to directly bolt up,but all the little stuff like air cleaner ducting, turbo/exhaust pipes and oil drain plumbing has taken forever to get the right parts to do it. And on a skid-steer it's even worse because of tight compartments.
