Not really. It looks like it was modified for use on an ultralite. What are the threads on the flywheel side, RH or LH? If they are LH it will have a cw rotation on the pto side and vise versa. Any 820 can be made into what ever model you want with the right parts. All blocks are the same, (port timing, deck height). The difference in models are in the head gasket thickness, the pto configuration, the location of the spark plug (straight or angle). Can you post more pictures? The 820 is still being built so all parts are still available.