From what i understand the less the number the more it pokes? Based on the specs thread on here the stock wheels are 43 f and 45 r so how bad will ot poke if at all? If it sinks in instead what spacers would i need for it to fit flush or just lined up with the fender

 

The more positive the offset the more the wheels will sink into the fender, so a +45 will be 20mm more sunken into the fender than a +25.

 

I used +30 in the rear with a 19x9 and its perfect. 40 would probably be in a little further depending on the tire size. If your going with 275 in the rear it would probably be flush or very close. Hope this helps.