Looking to make my truck flush.

I notice a vast majority of you guys like to tuck your wheels in, I'm on a different boat.
I'm looking to make mine as flush as possible and maybe even mexiflush a bit.

I'm looking at these:
http://www.ebay.com/itm/Cragar-Soft-8-Black-Steel-Wheels-15-x8-6x5-5-BC-Set-of-4-3975860-4-/331712573927?hash=item4d3b9c31e7:g:w4oAAOSwqu9VAWr7&vxp=mtr

Anyone have any idea how they would fit?
What type of offset would be needed to achieve a flush fitment?

I want to stick with 15x8, or maybe even a 16x8.

Thank you.

Seen people using those type of wheels drift trucks or stance what ever they call them. I like old school so i used 15x8.5 enkei wheels. Depends what your going for.