The 4L30E is not the same as a lot of other GM trucks , they use the 4L60E , totaly difefrent transmission.I already looked into that option , and it would require a lot of work to use one of those.The 4L30E was used in different vehicles like BMW and some other stuff , but you won't find one from GM without changing the crossmember , drive shaft , oil pan clearance issues , and different transmission control box.Try carpart.com or your local wreckers.

1996 Jeep Grand Cherokee 5.2 with mods.Hughes Air gap intake , 52MM TB , ford injectors, 2 3/4" lift, Doug Thorley headers , HID headlights with LED , HID fog lights , glow gauges , a few others