would 92 camaro ttops fit on a 86 camar0

 

Probably not. From what I've gathered, GM changed the small pin they used during 82-89 (they also used hooks for some years but I don't know which ones) in 1990 to a much larger pin. If you look at the pin you can easily tell that they're different sizes.

 

if the pins are different sizes, then you just have to find a donor car with the larger pin recievers, they just bolt on the same as the small ones. but the T-top shapes are the same so thers no screwin up there

 

When I was looking at t-tops with the small pin it looks like the weather stripping is different on the small pin ones. The plastic pieces that cover the pin recievers are different as well, not sure if that makes a difference though.