I was looking at a 69 Camaro and just found out that is an X11. The seller said It is an X-11 SS finished in Daytona yellow 76 and black vinyl top. Engine is a four bolt main 350 with Summit racing roller rockers, Holley 750 double pumper carb, headers and magnaflow exhaust. The engine is mated to an Auto Gear Housing close ratio put together as an M-21 with centerforce clutch, GM 12 bolt posi, 3:73 gears with aftermarket axles. Subframe connectors and car is outfitted with energy suspension bushings. All these mods make my head spin. Is there any way to know if this is a real 350 SS? I was looking for something closer to an original. All X-11 seem to be much cheaper than everything else I see out there. Sorry for the long post but I’m trying to find out what the value would be for something like this.