This is not a reissue--it's a modified version of the new tool mid 80s Blazer that came out a while back. The box art in the first post of this thread shows a stock hood.
Appears to be two sets on the trees. Maybe NA and EU versions. The previous 1:1 gen (S550) had different mirrors in the EU and other markets due to regulations IIRC. Could be the same with the S650.
It was a Cadillac sports car based off the C6 Corvette platform but with a Cadillac Northstar V8. The V series version had a supercharger. The XLR had a slick folding hardtop roof that went into the trunk. Pretty low volume.