Odd Belt Drive

#1
I have a chance to buy this pretty cheap but I'm on the fence? Any help with an ID? Also, would the jack shaft be original? I have to think the idler belt drive is a modification. Any help would be appreciated. Thanks
 
#2
Not original to your Scat Cat/Grand Prix. There appears to be no clutch but a belt drive clutch could be installed on the engine or jackshaft either one and make it work.
 
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