This build sheet vs car ad kept bugging me. According to Chevellestuff.net a November built Baltimore Chevelle VIN suffix would range from 112645 - 122126. The seller states the VIN as 136370B039303. According to the website, there was no VIN suffix in any of the 70 Chevelle Baltimore production year that would legitimize this VIN as advertised. The 120058 suffix would be a legit VIN suffix on this build sheet.
Not sure what the seller is really selling. I don't think this build sheet is from this car, at least it can't be as advertised. A picture of the cowl tag might help hone in where the VIN should be on this car.
Chevellestuff.net VIN by Plant and month.
http://chevellestuff.net/1970/plant_prod_no.htm