I've been running them in my 95 YJ D30 for a couple of years now. But the YJ D30 is different than the TJ D30. The YJs came with the vacuum disconnect on the right axle shaft while the TJs have a one piece solid axle. So it works well for me. When I insalled mine I read in the instructions from Richmond Gear that they recommend NOT running them in the front axle of a street driven vehicle that has full time engagement (ie. no lock out hubs or disconnect). On the other hand, I've heard of TJ owners who swear they can't tell they're in there (until they go to 4 wheel drive of course).
This Jeep sponsered by the IRS and my tax refund.