Is it possible to drill 5x5.5 rims to fit a 5x135 bolt pattern and work effectively. or what about drilling completely new holes between the existing holes on 6 lug wheels?

 

a machine shop can do it if its physically possible (if theres room on the wheel). you can also buy wheel adapters but they will increase track width (make it wider)

 

thats kind of what i asking, if there is room between them on say 6x135s

 

drilling wheels is a big mistake. u will have a vibration problem if they are not drilled perfectly. most machine shops will eye ball it. adapters are scary as well... def use lock tite or your wheels will fall off. just save up and buy the right rims for your truck