T18 with 4:1

I'm looking for a t18 with the 4:1 first gear, hopefully with the drive shafts also.

Can I be the first to ask, why the 4:1 and not the 6.32:1??? :-| :-|

I was thinking about having a functional first gear, other than when I would want to drive over a house.

ask mrtazwrench he usually has these things laying around :wink:

thanks