thats not 100% true. My 86TC came factory with an 8.8 with drums, quad shocks and sway bar. There are a mix of 8.8 and 7.5's in the 86's
I found out there is alot of weird stuff on the 86's Some guys i know on NATO have 86's with an E3 manifold and small Vam. while mine has the E6 brown tops and the big Vam. Lovely ford work!