I found mine won't budge. Seized solid unless I loosten the bolt a bunch. Thus I need upper control arm bushings, which aren't in the dwindled/depleted budget for the winter beater bus. Even if I could afford them, I don't know anyone around here with a press. 
So, I have an opportunity to buy some in good shape that should be a simple swap over and it looks like that's the route I'm going to go. 
Used ball joints as well. 
: /

I got into prettying this bus up and so far have replaced 10 seperate pieces of metal and spent hundreds on supplies, metal, etc. it was supposed to be a two day job and now I'm 65 hours in and out of funds. I've got the body almost done and its going to be sick, but finding a bunch of stuff bad on the suspension was unpleasant and unwarranted. 

The joys of bus ownership ehh?
: )
Thanks guys. 

-craig

On Jun 27, 2013, at 1:26 PM, "kenneth wilford (Van-Again)" <kenwilfy@comcast.net> wrote:

> They should be the same.  I have a nice set off a 91 if you are in a bind.
> 
> Ken
> 
> 
> On Thu, Jun 27, 2013 at 11:58 AM, Craig Cowan <phishman068@gmail.com> wrote:
>> Are all upper control arms the same?
>> I need some for my 90gl and have access to some off an 84/85. Are they compatible? The same?
>> Thanks!
>> 
>> -craig
> 
> 
> 
> -- 
> Thanks,
> Ken Wilford
> John 3:16
> www.vanagain.com