Sounds simple, but...
1. in a 240z, when you also change to a 1983 280zx 5-speed; do you use the 240z driveshaft or the 280zx driveshaft?
2. oil and LSD lube; total is 1 quart, how much of each, and any particular oil
3. presumably when changing output flanges and input flanges one needs new seals; would these just be the ones I could get from a Subaru dealer
Thanks (and apologies for the simple, and possibly repeated, questions)