Well I smoked the Blue Plate Specials in mine and now have the Z-Pack but I have a problem that I can't seem to figure out when the trans warms up. It will shift all of the gears very firm but something is slipping when either the lock-up clutch engages in the verter or the 3-4 is letting loose. It's kinda hard to explain...I'll get 1-2, 2-3, and 3-4 all firm and good under 50% throttle or more and then when it locks up I get some slipping before it goes into full lock-up. But if I'm driving normal all is well. This is only after the trans has warmed up...What's the diagnosis Doc... Zed