Brake Masters and Booster Differences?

[spank226]

Looking at parts gathering for disc conversion. My car is a 67, spindles are from a 69. Looking at master cylinder/booster combinations on RockAuto and there are different units listed for 67-70 and 71-78. The 71-78 are cheaper. I don't mind flaring new hard lines.

Is there a meaningful difference between the 2 versions of master cylinders that I should take note of as reason for choosing one over the other?

I'm particularly looking at http://www.cardone.com/Products/Product ... 002&p=rock

Thanks

[69W34]

Dual master were standard beginning in 67, you may want to check numbers though I doubt there was much difference with the 67-70 application, there is really no point in moving to the 71-78 style particularly if combination application shows a different part number, that said: ...

I would be looking at master cylinder and booster individually for commonalty, one or both may be different. Should the 2-gen master cylinder be the same as the 1st gen, but not so with the booster there would be a reason. Different part numbers reflect application through engineering /design and visa-versa? there are times that a different number may reflects nothing more than bolt pattern change for mounting to the firewall. Even if at a lower cost it not worth the trouble.

The lower cost may be nothing more than a larger application base where a high volume equates to less expense.

ps .... save your self some grief and use the parts at hand!