i just got my new diff center all welded up and went to put it in my car. chucked it in and which was cool but once i went to put tailshaft on the holes were to small for diff. so i pulled it all apart but couldnt make it work. i would just grab another tailshaft but it custom for r30 gearbox so now i have to find another center. obviously there different centers but the axles etc are same. dont ya just love cars. thought i would have a windge if anyone in adelaide has a center lying around let us know cheers.

H145 flange from a 1200 or 1000 looks like a butterfly, H150 from 120y look larger, squarer.

I guess you put a 120y centre in standard 1200 housing is this correct? Do you still have the standard diff housing in the car?

yer i think it a 120y diff. has square flange. i played around with all the gears and everything from 1200 and 120y centers and cant make it work cos it comes down to the flange and i cant change that without changing driveshaft. the 120y center gears are prob three mil bigger than 1200. i just got to find another 1200 one

Ive done this before, I just got another tailshaft which really isnt an option for you.

Grand auto wreckers should have an H145 centre, it'll be $90 though. Just show them the flange you want so you don't get the wrong centre.

yer i figured i would have to go down that parth. would they give me any money for the 120y one. i have been to it with a welder now though.

I doubt it, they might give you a 5% discount.