stock steel wheel help

[1972k5blazer]

Can someone steer me in the right direction for a set of stock steel white wheels that the 69-73 dogdish hubcaps fit looking for 4x4 15x8 s . like who might make them new or any used ones out there ? If anyone makes new what backspacing and offset do you ask for ? I saw stockton wheels and sent e mail but not heared back yet , I got some dogdish caps and looking to put on my 70 4x4 but need some 15x8 s i know stock ones were narrower but where any later stock ones 15x8 and what years would they have came on ? thanks