best gearbox option for 12H-T (1 Viewer)

[gogoat]

Hi all

What would be the strongest / most reliable gearbox / transfere that would reasonably bolt up to a 12H-T motor?

regards
gogoat

 

[Lost]

you dont have many bolt up options...
1)h55 5speed
2)a440 4speed (auto)
3)h42/h41 4speed
these are the mechanical options

(there may be more if someone wants to chime in)