no problem buddy
just did the tranny in the truck last week myself
I have a couple one piece long ext I use
helps to drop the tailshaft some to get at them,A-bodys are tight,I know my 68Dart was
make sure you get the throttle pressure rod adjusted out correctly
another good upgrade is going to the newer mini starters,they wiegh 6 lbs compared to the heavy one you be playing with tomorrow...have fun!
you might want to swap the speedo gear in the new tranny to keep the speedo right..if its original
the cuda should be the right shift lever also...but I allways try to keep them on the car when swapping trannys around...makes hook up easy-er and not mix and match linkage
good luck and holler if you need help