I happen to be building another from Reforger '85 right now, (well, other things have taken precedence lately but I should get back to it)
You can get the Tamiya kit for a steal, or if you don’t care as much about the interior you can purchase the Academy kit - it doesn’t have the decals for the interior.
This is a very fine example of what can be done with that old kit, by JJohnson59 here on Armorama. It includes most of the details people just leave off:
JJohnson59 didn’t even have the newest updates for it, which are fantastic. You can get road wheels, shocks, final drives and other assorted 3D printed goodies from Jacques Duquette on this site. I’ve used them and they are first rate.
I believe he may even be working on making all of the missing parts for the kit as I recently sent him the measurements - the swim barrier brackets for the hull, fire extinguisher pulls, and a better exhaust. Stay tuned for when he comes out with those.