Re: lug pattern
The lug pattern for F250/F350 is 8 on 6.5 That pattern was used until I believe 1998. Then in 1999 it changed to a metric size of 8 on 170mm. I'm not sure when Chevy changed in the 80's but they used the same 8 on 6.5 pattern BUT the center hole was smaller and won't work. As for Dodge, I think you're good until 1993. Hope this helped.