Dude, you need my truck...check out my album as I did the same thing:
1) Need "suburban hauler"
2) Find $900 '80s Ford F100/F150
3) Rebuild engine and fix things with hammers and glue (you'd be swapping in a 5.0L)
4) Rock it cheaply, and enjoy.
http://www.columbusracing.com/forums/picture.php?albumid=669&pictureid=5384
Next to my old 1982 Chevy C20 diesel. It was an automatic and needed a few things so I wanted a SIMPLE TEE-RUK with a stick shift.
http://www.columbusracing.com/forums/picture.php?albumid=669&pictureid=6070
http://www.columbusracing.com/forums/picture.php?albumid=669&pictureid=5610
Yanking the old 300ci inline-6 for rebuild in 2011.
http://www.columbusracing.com/forums/picture.php?albumid=669&pictureid=6714
http://www.columbusracing.com/forums/picture.php?albumid=669&pictureid=6768
$80 paint job in my driveway. I couldn't paint over the hood patina.
http://www.columbusracing.com/forums/picture.php?albumid=669&pictureid=6777
2012 picture. Front was dropped even more with FREE DJM "Dream Beams" lowered I-beams
Regular cab-long bed Ford's are the shizz...they cost nothing to buy, cheap to maintain/customize and I will be going up to Mad River Mountain this weekend with my daughter in mine to go camping...with snow tires, I've NEVER had a traction problem even though it's 2WD. Plus, they haul a TON of stuff in the bed...and kids think it's super cool.
The only reason I'm not driving it on the daily is the bench seat vinyl is finally giving up the ghost and it really needs to be recovered. If it had A/C, I'd drive it a lot more regularly. It's been a great truck and very reliable.
Swaps - even on the cheap - will be $thousands. Why not just start off with a bigger, better, cooler platform that accepts the 5.0L (or 5.8L) easily?