Looks like a Pope base to me, with a Sheerline 6/ Utility cowl and starter assy....
Cant see the engine,but Im sure you know your Victas. The Serial number is consistent with early 60s Victa, but the base its been mounted to appears Pope or possibly Torque Major. But Im thinking original Pope.
The Model 84-158 Im almost certain is Pope Prefix also.
Blade bar is almost certainly home made.
Crazy Mower Vman!
