1987 B2000

Hey guys i just got a B2000 and i need to change all the fluids and was just curious what type of tranny fluid goes in the 5 speed manual. also need to know what weight oil goes in the rear differential. Also if someone has some stock turn signal/brake housings for the back of the truck let me know, i also need some turn signal housings for the front if someone has them for cheap let me know.

Thanks
Greg

trans and rear diff both take gl5 which is 80-90 wt availab;e almost everywhere but the trans will shift smoother with a thinner fluid