Suburban wheelbase?

[SS Tim]

If you are trying to wing this at least get some good source information. Download a 71 Sub info package from the GM Heritage site.
http://www.gmheritagecenter.com/gm-h...tion-kits.html

Buy a brochure and a driver's handbook too. Lots of basics there.

Also download the factory service manual and overhaul manuals. They are linked in my signature.

If you need information it is out there, just not always easy to find or free.

If you wanted to see a 133" wb Suburban/Panel it would look a lot like this photo chop I did. This was intended to get the strength of a one-ton frame and better weight distribution for a heavy trailer.