Replacing CSB and Guibo - What else to do ?

[smooth]

yeah, was able to do it without taking off the exhaust.
pulled the two heat shields, but that was it.

[braddammit]

The car is a '87 325i :

I am planning on doing the following maintenance :

1. Replacing the CSB
2. Replacing the Guibo
3. Replacing the shifter bushing (stock shifter is fine by me).
4. Also, I will be changing the differential too.

Considering that half the drivetrain will be out of the car, is there any thing else that I should do "while I am there" ? Probably thinking about the seals on the transmission and stuff.

Thanks,
Bala

I'd replace the bushing in the front of the driveshaft. I think it's called a centering bushing or something like that. Doesn't seem to do much but I'd guess the additional support it provides it makes life easier for the Guibo...