[Outwest34au]

Hi JC,
if it helps, I was going to go the sigma route, but it was just a tad too long. It originally had an old XY-XA Girly, but ended up throwing away the oldy Girly booster the previous guy had butchered and got a XY-XA PBR brand spanker (fully reco) from Terry at Hydroboost. Awsome guy to deal with, he had it in the mail before I could pay him. The input rod was too long but I never gave him specs previous, so he sent up a correct length rod which we fitted locally.
The PBR is bolted to an XY-XA master cyl and it appears to work well with my alloy donk and jag brakes all round.

Cheers

Edit, has not been engineered for brake testing, just my observations.