rear fender lip measurements 55'

[EODtech55]

ok so i bought a new rearend for my 55 its out of a 2000ish camaro the wms-wms is 64"...no the for the fun, im trying to order new wheels and tires right now and i wanna make sure my tires wont rub the inner lip of the fender does anyone know the measurement from the lip to lip? i found a calculator that tells you clearances but i still need that last measurement. the wheels are 17x8 with a 4.75 back space and the tire is a 255/50/17 any help is appreciated and pix of that yours running if you happen to be using the same rearend