Gearbox cradle

[dads tractor]

Do any of you have a gearbox cradle or even better the dimensions of one to fit a floor jack with removable jack pad /base ? Gearbox will be for gq gu 4.2 and 3lte gu all diesel variants and manuals. Don't need one yet but there will come a time for sure and have left over steel to fab one up.

Thanks in advance.