[texascowboy593]

OK only had a couple of hrs avail today to work on "her". I did get the Blazer tank removed and got the measurements. I also started on trying to remove the rear crossmember on the apache frame. Looks like I'll be able to remove both rear crossmembers (or maybe just the rear-most) and install the crossmembers from the Blazer frame. Just have to measure distance between crossmembers and bolt them up!

Jebb, here are the dimensions I got:

Inside the Apache frame is 33 3/4 left to right
Blazer tank is 28 3/4 left to right and 28 1/4 front to back (these measurements include the tank's "lip")
Inside the Blazer frame is approx 33 3/4 as well.

Looks like the blazers crossmembers should slide right in w/ no problem.
Heres a couple of pics of so called progress today... ran out of time before I could get crossmember removed. At least I've got next Saturday...