small bolt pattern to big bolt pattern

Just curious, why don't you want bbp front disc brakes?
It's an easy upgrade and i bet parts are cheaper than the old drum brake stuff.
You also get much better braking with a lot less fade......


I am with you there because of part prices.

I looked up a brake drum for a 1969 B body and it was $113.99 for the 10". The 11" was a little higher.