[Roger Bolick]

The old Ford version is cast iron and a 1" bore. The mounting is unique and usually can be adjusted by using a long bolt in one of the bell holes to mount it while fabricating a bracket for the other. The bleed comes with it, but the adaptor hole is some really odd thread count... its available, but takes some careful measuring and looking (7/16-24 vs 7/16-20 or some...).

The old Girling repro is aluminum and a 7/8" bore. It always needs a bracket, but its pretty easy to fabricate. Once again using a long bolt in a bell hole or some such combo. Uses a standard thread fitting and rebuild kits are available.

For my 2 cents, I like the 0.700" bore master with 7/8" bore slave.

The 1" bore slave may need a larger bore master that isn't readily available.

Watch the bracket in operation and eliminate flexing. I've had some surprises here.

Price is $40-$55 for either one...