Wilwood rear p-brake on 68 Firebird

[Bill68fbrd]

I have some problems-solutions
I got the kit # 140-7141 (2.81 offset)
1-Bearing OD slightly larger than Bracket kit - I emery wheel inlarged hole. Easy
2-When I bolted up axle using OEM nuts,plate and found axle could move in & out 4mm = .1575". I checked OEM backing plate is 2.6mm = .1023" and Wilwood "Bracket Kit" backing plate is 6.6mm = .2598" thick
when you replace OEM with 4 mm thicker plate you get 4mm play
I got 4mm spacer machend slighty smaller then the bearing cut in half
and with a little grease to hold in bolted up and the axle jamed. After looking close found that OEM plate only bolts up to outside of bearing inside is wider I grinded out inside of my 4 1/2 spacers reinstalled and Bingo no movement and no binding.
3- My offset is approx 2.71" my kit is set for 2.81" thats .1"or 2.5mm
I need. What should I do
1- install spacer plate between axel face and rotor at same time have 7/16" studs in axel replaced with 1/2" .1" longer (this is the way Im leaning)
or 2-Change spacer (and get longer cap screws) on bracket kit that holds the caliper. I think .1" may be to much? Wilwood puts out a kit that is .06" more.

Im glad I havent ordered my wheels.

Bill