is there any visible differences in 1991 rs and 1991 z28? other than emblems and rear spoiler?

The hoods are different, Z28 got louvers and the RS are flat. I believe that the GFX are different.IMO The 90-92 GFX on the RS are much better looking.

Just the "power blisters" the wing, and the emblems. GFX are all the same for 91-92 camaros.

91-92 z28's have hood blister or raised bumps. I believe blisters will not fit on 82-84 z28 hoods since "depression" for louvers/blisters are too narrow. 85 and up hoods work but easiest to find 91-92 z28 hood. RS had base 15" wheels with option to have 16" lightweight z28 wheels. 91 z28 also has fog lights, black headlight areas and red bow tie on a black front grill. Photos below show front differences pretty good.

http://www.camarosource.ca/php/camar...uide&year=1991

I didn't know that RS's came with different chin spoiler. Z28 spoiler has extra bevel under grill. They both look pretty good

RS
http://images01.olx.com/ui/1/03/39/11549439_1.jpg

Z28
http://www.dragtimes.com/images/5622...let-Camaro.jpg

Also depends on engine size. all 91-92 RS's with the 3.1's got 15 inch wheels, where as the 305 RS's got 16's just like all the Z28's.
(I think, every V6 car I have ran onto have 15's and the V8 cars had 16's)

My 91 has 15's, and a 305, it's bone stock

Both have it, but the mettalic on the Z-28 makes it stand out more.

My bad on the hood thing above, forgot about the hood blisters.