Hmm, sounds odd to me??
The very early cars had one M12 flare nut and one M10 so you couldn't mix up the connections, with the unions just forward of the bracing fitted to the front subframe.
Later cars had M10 connections on both pipes, the connections were staggered and were on the aft side of the subframe brace.
In any event, open the bleed nipples of both calipers to make sure they're not seized before breaking into the system, and open the NSR bleed nipple first, then press the brake pedal to the floor, and block it against the seat with a piece of wood to prevent the pedal returning.
This has the effect of preventing fluid loss when disconnecting the pipework
Brian
