944T brembo brakes on vw - which master cylinder size?

[djmatio]

Hi,

I'm jumping back into my VW rebuild project and need to purchase a new master cylinder for my '72 super to use with the rebuilt porsche 944 turbo brembos calipers front and rear. Reading Lanner's article on vdubengineering.com lead me to try the stock 19mm MC. Looking on Mamotorworks.com it seems they have a 20.6mm master cylinder they say is for bug that "upgrade" to discs. Putting aside that my bug isn't quite what they have in mind when they say discs, is there any reason I should NOT purchase this 20.6mm master cylinder instead of the 19mm MC? Is bigger better in this case or should I stick with 19mm stock?

The newer 20.6mm MC is actually $10 less. Given the expense of this project, that hardly seems to matter at this point though. Right now I have no master cylinder and need to choose.

Thanks,

Matt