Ok a buddy of mine has a 84 1/2 fhtc.. with the evo motor.84 was shovel, then 85 was evo. He's looking for a true dual exhaust that wont kill his wallet, but, has also heard that neither 84 or 85 exhaust fits?? Since I have no clue, Im gonna post here and let you guys run with it, thanks....BAR p.s. I put my $$ on the 85 to 94 will fit, but Im not positive