Horn button, Camaro steering wheel

[Ron]

I put mid-late 70's Camaro steering wheels on all my Chev trucks and Scouts. I'm attemting to do it again on my 67 C-10 which has a 71 column. What I have found is that their are 2 types of isolators (the plastic ring with the 3 holes) they look almost the same but one is slightly taller than the other. I need the taller version. I cannot remember what vehicles use the tall isolator, you guys know? Thanks. When I find the application it will be easy to order.