Well I'm still interested the idea of the 4 pistons in the rear, sounds like a future mod for me. Nice work higgi.

brake lines done and handbrake feels just right with 3/4" cylinder....

Why would you need such a massive bore master cylinder? Your just gonna have way too much pressure and lock um up too easy...I remember seeing a thread where a guy was experimenting with tons of different MCs I think he said 15/16s bore offered the best pedal feel and performance or it was the Subaru MC which I think was a a 1''.

MC should match total volume of brake calipers. If you upgrade to larger piston calipers (which i did by going brembos in front), your normaly firm brake pedal will become weak and pedal travel longer...upgrading to 929 MC with 1" solved this situation back then.

Now, upgrading rears from single to 4 piston is again enlarging piston area and volume of fluid, so going bigger MC might be again necessary. Of course, you wont loose your brakes by keeping stock MC, but feel will be different and its up to you if you how to solve it....

Yessir I am familiar with Pascals law, but sorry I gapped and forgot you upgraded fronts too.

Took car (drove it 350km there and 350km back) to drift event in Slovakia, and brakes works great both on track and on the road, love them :)