Harmonic Balancer

[Breadz]

Hi All,
Im looking for some info on a Harmonic Balancer for my 89 Vitara
The rubbers have gone and ill need to replace it, but im struggling to find one
I have a G16A engine, I looked on 4wdpartsonline, and the list one but its out of stock.
they also have one listed for the G16B Engine that says it will fit.
Im wondering if -
1: if the G16B one will fit, one of the pulleys is a different size
2: if there is a different model of car that will suit the same balancer or,
3: where to find one that will fit.

Im fairly new to building cars so any information is helpful.

Thank you in Advance,

Brett.