I remember when DougH did his. He had 24V 3.0 and ended up needing the 3.15s. IIRC, that's when Mister Bishi made the general suggestion to order via the cross-ref to the stock gear. That way they wouldn't have to guess what was on what truck in various markets. (In Oz, they never had the 24V 3.0, which basically had the 3.5L tranny/tcase. So, they didn't know about this when Doug ordered his.)

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