If you are considering an SQ swap, your first order of business is to read the Turbo Bible thread.

$700 for a donor car isn't all bad, depending... That's what I paid for mine, along with a slew of parts, including an extra tranny and 88-89 goodies. Like you said, some things did need rebuilding (besides doing the motor itself).

Big Truck: 00, 3.5, Endeavor, 5-Spd drive line in hand!
Little Truck: 87, 2.6T I/C, MT, LSDs, Tonneau Top
Her Truck: 03, 3.8, 20th Anniv, 65k
Daughter's: 06 Eclipse, Keeping it Mitsu!
FSMs: MitsubishiLinks.com