Lowering 85 Sierra on 26s! few questions?

[jeepc1026]

Yo whats up ladies and gents. new to the site need get a few answers for a few question? i have an 85 sierra swb just picked it up i have some 26*10s i want to throw on it with a western chassis 2 1/2 and 4" drop will 305-30-26s clear the drop? and also what rear chrome bumpers of other gm trucks interchange or fit wit slight modification? (i like the 67s 68s chrome rear bumpers the smooth looking one) any tips or opinions or comments or knowldge are welcome thanks guys

[OARNGESI]

Have you put these on yet thats a tall tire and rim if you have them try them on and measure i had a 70 with this drop and 23s but i think the 67-72s had bigger wheel openings

[jeepc1026]

yep the old trial and error lol when she gets back from paint ill try that i got a set of 255/30/26s just in case the 305-30-26s don't fit i just didn't want the hassle to mount and dis mount them lol my buddy has an 89 step side with the 255-30-26 and its really dropped they have no major rubbing issues just a bit on the inside but when you turn all the way in the inside. thanks for the advice bro