i was wonderingf about the 5"bs fronts. my 5"bs 16s would hit the tie rods on the fronts w/ drum brakes.
there was a pic of someone else's 5"bs fronts... 17" ... which the tire would hit the fender extension when turning outward. i think he said he had to put 215s on it... 215/40s maybe,...17s.
i'm glad yours are woking well. HOTOHC seems to do well with lots of backspace too. mine cant seem to take as much. maybe it has something to do with the UCAs as well as the rim dia...
4.5 is all i might get on the front... maybe 4.75 w/ 17s to clear the tierod... i dont know.