Assuming my +2 has the correct specified brake booster, what size would the low pressure piston be. If I was looking for replacement, what would the pressure ratio be 11/16" ?
In a rush at the moment but I think Plus2s were 3.0:1, can send the full Delphi/lockheed/girling servo PDF if you want…
John 
Hi see there:https://lotuselan.net/forums/viewtopic.php?f=42&t=46580
Urs