Here's some more...
Pics.
1- Dipstick, tube and rear "blank" hole brass plug. (R32-33-34, RB20-25-30 Vs. Z31 200ZR RB20DET)
2- Rear "blank" hole brass plug. You hammer this one out with a punch from underneath and reuse it to plug the, now open, front dipstick hole. (R32-33-34, RB20-25-30 + 26 Vs. Z31 200ZR RB20DET)
3- Relocated dipstick. (R32-33-34, RB20-25-30 + 26 Vs. Z31 200ZR RB20DET)
4- Front pickup. (R32-33-34, RB20-25-30)
5- Rear pickup. (Z31 200ZR RB20DET)