Originally Posted by bbond105

The way I understand it is that he is removing the trans to install a Yank 3600SS torque converter and while it is out he is having the HD2 and other parts installed.

Originally Posted by mrvedit

MaroonMonster, Mr Bond and others are giving very good advice. For the cooling lines I would suggest using TFE (Teflon) AN-6 hose fittings because the fittings are much more compact and less likely to require tunnel clearance. As suggested, have both 45 and 90 fittings on hand to determine which is best for you. IIRC I used two 45 degree fittings.

Part of the confusion is why you are removing the trans because the items you mentioned in post #1 may not require removing the trans, although opening the servo is a problem due to clearance.
Your stock trans is 17 years old! With the trans out why not get it rebuilt now; it is not a performance trans like your Performabuilt and you are likely to quickly trash it.
I would suggest a 4l65E rebuild kit to get the 7-friction 3/4 clutch, the parts suggested by Mr Bond and have the mechanic follow the steps from MaroonMonster.

Finally IMHO the Derale oil pan is an expensive gimmick. For its price you can get much of the trans rebuilt as everyone is suggesting. Also it will sit too low and could catch something, crack and ruin your trans. Instead consider switching to the inexpensive truck pan which gives you a drain, a little extra capacity and it only sits a bit lower.