i was pretty sure they did fit. i was talking to a buddy about it, and basically his trick years ago with his s10 was to take a blazer tailgate so its pretty much almost all shaved then take off the top off the s10 tailgate, flip it and you pretty much have the shave tailgate and a rollpan for cheap as a tailgate. maybe he was talking about more fabbing than he made it sound
they are definaltly not the same at all. as you said the tops are different. so are the hindges and the latches. i'm actually in the proccess of cutting off a blazer tailgate flat middle section to weld it to cover up the indent part on my trucks tailgate.