boss 338 rear wheel fitment on 85 GP

[85GPLef41]

trying to keep the ball rolling on my build and have been looking for wheels, i so far have settled on the Boss 338 in 18in.. i am thinking of these:
http://www.ebay.com/itm/400448488991?ss ... 1438.l2649
I think i have figured out from research is that the front wheels should be ok with a 245/40r18 and rears ok with a 275/40r18 from what other g body rides have.. backspacing on the fronts 4.5 and 5.03 rear... If i have to i will roll my rear fenders and use spacers with upgraded lug nut studs on all four corners. I want some CCW wheels but it's gonna be while before i can save my pennies for them i'm so close to pulling the trigger after going to the local rim shop and getting a quote for close to a grand for the ridler wheel knock offs!! I plan on getting the rims first and getting the tires on credit through discount tire. If you guys think they will work let me know.. BTW my GP is dropped 1 in using Hotckis coils front and rear, Hotchkis solid rear control arms, rebuilt suspension front and rear and c6 brakes front and rear.. TIA!!

 

[Kansas Bu Wagon]

This place has good prices. Haven't read any reveiws though.

http://wheelsforless.com/

 

[85GPLef41]

Thanks! to be honest i'm kinda somewhat stuck on the boss 338's and from what i have researched some run the 9.5 with 5bs with no issue... BUT they are Monte SS and GN rides and it seems GP's are looked over somewhat. :| I will eventually get what i want ie: CCW, Rushforth or Forgelines sometime in the future. My goal right now is to get it rolling and start driving it once it's done! if you have 18's and running a fat tire out back HELP!!

 

[85GPLef41]

never mind a old post revived somewhat confirmed my research...yaaaay!!