Rupp?

[t-royMN]

I picked this bike up, and am wondering if anyone knows what model of RUPP this is, if it even is a RUPP. Also, what parts of the bike look original (aside from the engine, which clearly is not original).

Thanks

 

[capguncowboy]

The Seat is from a Rupp RMX100 or similar bike -- not sure what the rest of that bike is though.