Don, from the pictures this looks like a fun ride that would give you lots of excitement going through the gears. From what is on the car things were done well in the restoration. The sport steering wheel, the SS dash with correct guages, interior has bucket seats with no headrests. They look like pre-69 seats. The shifter and console look OK. There are three other "red flags" that I see. One is no pictures of the engine compartment, rims and tires are not correct though nice in apprearance, and there is no build sheet or window sticker to prove SS options. Usually SS had F-41 suspension with bars in front and rear. If the dealer can't show paperwork to document then it's "buyer beware." The tires should be bias ply and there were two rims available, both Kelsey Hayes. ONe is 14inch square hole rallyes with hex caps.
Optional 15 inch grey rims similar to Z28 in apprearance was available.
The ones on the car presently are earlier rallyes with radial tires.