Hey Matt I'm on tour at the moment so I don't have any pics of the tank but I'll put one up when I get back in a couple of weeks!
The car made 400hp on 20psi, the limiting factor being the fuel pump (040). I do have an 044 and surge tank at home but I want to get used to it first, then I'll put the 044 in and go back for 500hp or so.
It's pretty funny, with the RB30 bottom end it's on full 20psi at 3700rpm and holds full boost until rev limiter at 7200rpm.
I haven't had a chance to drive it properly though because it was tuned on Friday but it was raining all day so it wasn't fun at all to drive, and I left early Saturday morning to go on tour with the band. Unlucky haha.