D154 PB kit on 12 bolt w New Big Ford
 

I've just ordered a 12 bolt with New Big Ford housing ends - 2.5 offset.
I'm looking to put 140-12209-R kit with PB on it.
My GM wheels have a 70.3 center bore. The Wilwood rotors have a 3.06" center ID with a hub register adapter ring with a 71.1 (2.80) supplied with this kit.
It looks like they offer these other options:
This kit includes a 3.06” center I.D. hat or rotor assembly and a 2.80” hub
register adapter ring to accommodate the installation of this kit on axles of
either dimension. For axles with different center register diameters, please
consult the table below for optional adapter ring sizes.
PART NO. REGISTER I.D. NOTE
NO ADAPTER USED 3.06” Rotor Center hole id
300-11732 2.86”
300-11962 2.84”
300-11338 2.82”
300-11337 2.80” SUPPLIED WITH KIT
300-11532 2.78”
300-11803 2.52”
300-11901 2.50”
300-11653 2.18”
300-11339 2.00” OPTIONAL (Machine to fit I.D.)



Am I correct in thinking that I need the 2.78" part# 300-11532?

Can anyone inform me concerning the hub register adapter rings?

Thanks,
Brian

yep, I just went through the same deal with a Moser rear. Measure your hub register.