I have a 91 Formula... battery on driver's side, stock air tube from tpi goes over to the passenger side... I have long since unbolted & sold it (looks much nicer with K&N filter on the snout of the engine (sorry maf guys) Now there's a round opening there next to the canister... I was thinking of building a bracket for my MSD box, but I don't know what size bolt goes in there (that held the stock air filter)... Anyone know?

Thanks,

Rafael