94 e34 540i tranny questions! 5hp30

[e34lvr23]

ok, i bought a very nice looking e34 540i for 250$, The guy i got it from didn't know how to drive it with the (transmission program error)! and instead of me fixing the valvebody issue it has, i'd rather replace it.....it feels like the tranny is slipping in the program mode with the trans selector in (M). and i fear the A clutches will need to be replaced! and along with the 200$ rebuild kit and 130$ valve body kit, and 150$ worthe of fluid and the 80$ filtran filter i'd just assume replace it with another (zf 5hp30) i have......the only problem is that one has the Green tag and the one in the car has the black tag! does anyone know the difference between the two or is it just the fluid type?

i'd really apreciate the help if anyone knows? i'm just trying to do a fairly flawless swap and really don't want to run into any fitment or electrical issue's!

Thanks all

any tips on doing this job would be greatly apreciated also!