Master Cylinder Bore Info Needed for Hydroboost

[Hot Air]

I want to swap out my cast iron master cylinder on my hydroboost unit. Does anyone know bore size on a normally aspired (V8) 84-87 Regal? How about bore on a Pontiac GTA or TTA master cylinder? Know of anything similar that will fit my 84GN? I want a master cylinder with aluminum body, plastic reservoir and 1.125" bore!
Any help would be appreciated.
Conrad

 

[TexasT]

If this will work for you, here is the part number. It is from a Cadillac. I thought it looked way better than that big cast one.

Mine is an 84 setup from rockauto.com
It works great.

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