A DT lift should not cause any front driveshaft problems. Most of the 4" lift kits don't change the front pinion angle at all and don't have problems.
The Superlift kit did though (another reason I like the SL kit), and I liked that, so I copied it.

I guess I need to do some updates to my page. <img src="/forums/images/graemlins/sleeping.gif" alt="" /> My 4runner crossmemeber doesn't look like that anymore...

'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik