Chevy & GMC Vans

Well I have not been in here to talk or post cause I chewed up about 500 hours on my little beast.
2003 chevy Astro AWD 110,000 / donor vehicle 1999 chevy Astro AWD
Doing this from memory my list isn’t here rite now.
Removed rear-end / fuel tank / muffler and tail pipe
Needle scaled and some welding as nesc / pixlex 20 / zero rust up to transfer case mid ship and front fender wells on sides
G80 Rear with new backer plates / seals / repositioned shock mounts
Rear springs 4+1 rated at 2100lbs ea
Hangers and shackles from Journey
Monroe sensitrac shocks
New ebrake cable
Heavy duty trailer hitch (donor vehicle)
New fuel pump
New fuel lines to engine
New tank shield
2” pucks
Reindexted keys
Replaced and Lowered upper ball joints
Replaced drivers side wheel bearing and lower ball joint
Remaned axels
Replaced radiator support ( big PITA)
Water pump
a/c lines
some brake lines
serpentine belt
front shocks Monroe sensitrac
center roof console and lighted visors (donor vehicle)
lock actuators as needed
flushes fluids filters and complete tune up. I will review my spread sheet and add the stuff I forgot.

With that being said I think I would like to put a V8 in it. I want to do it myself as I have been doing.
What Year make and model should I go with with my capabilities which are not as good as it looks, LOL
looking for the easiest way with good improvements on power and mileage.
Please keep it as simple as you can.
Thanks!!

Just talked to a shop that said they can put an L92 with a 465 tranny into my 2003. He said I should be able to find the package I need for around 3500. The shop is equiped with a machine shop dyno and all the goodies. It will be pushing 465 hP when done. 1500 to 3000 labor depending on what I want to do. so they can fabricate, do anything to the computer they need to, and dyno test to dial it in? Wadda ya Think guys?

I think you should git er done and let us know how it turns out ;)