Thanks, a bell housing you can buy, great. The engine bay of the Hiace is quite different but the 4age can probably fit. It is running 225/75r16 wheels, so not the biggest offroad tyres.
This is only about torque, the power output is higher (and higher in the revs, I know).
You could boost it, but I think I may want to add an electric motor, lets say 20hp, providing the extra torque from 0rpm. It will add 150nm, so that is significant. Do power steering and vaccum electric so it doesn't bother the 4age anymore.
That allows me to ditch starter and alternator, and allows to ditch the gas tank and other stuff, because I am going to do the camper/rv stuff electric only. Swap in a 48v lithium pack for the same weight as a 12v lead battery.
That way, it serves two purposes, so I can cook on regen power and will male the van lighter.
And further weight reduction on the car, not bringing the swing out tyre carrier anymore.
I already built an offgrid lithium system. And I love the instant torque from my EV