Hopefully I have solved my problem. Online adds resulted in picking up a running 13hp B&S engine (28M707-0178-01) in what remains of a Husqvarna model LT1538 for $250.
Will pull the engine and decide on if I will sell on the rolling chassis (no bonnet unfortunately) or dismantle it and sell on parts like wheels, gearbox/diff, fuel tank, cutting deck and/or deck and blade spindles etc.
Might make some money back with some effort.
