Ended up with a rear axle out of an isuzu rodeo, its within an inch of my stock WMS to WMS and has the same 6 lug bolt pattern that I already have. The diff is a dana 44 that I am putting a new gear set in as I dont want the 4.3:1 ratio that is stock on the rodeos.
sold the Th350 and still poking around for a repower... leaning toward a vortec 4200 I6 from a 05 trailblazer, but stil driving the truck as it is lol
its my daily and i am just collecting parts and planning at this stage.
Thanks for the help everyone.