Not right off hand, but I found out a local metal/scrap yard can be your best friend when you need to make s**t for the car (adapter mounts for racing seats to factory sliders, in my case, still need to shim them)
Umm... as far as reenforcing the mount area for the hydro brake, set the assembly where you want it, drill the mount holes(if needed), get a section of sheet steel +1 in. Longer x +1 in.Wider x 0.125-0.250in thickness and drill the needed mount holes, get some hardware (i.e factory bolts or grade 5-8 and nuts w/ same thread pitch and sofourth... tack the nuts to the steel sheet w/ the hydro slightly mounted in the car, remove the hydro assembly and tack all sides of the nuts (not too heavy though)...
If the steel sheet wont fit in the tunnel at the mount point, take a propane(rather use oxyacetylene) torch and heat the sheet at the affected area and beat it into submission, let it air cool or use a damp cloth to quench the metal, after it cools, paint that b**ch and bolt everything down
hydro mount
--------------- <<Trans tunnel
steel sheet (backing plate)
you can also drill some extra holes in the steel plate to "plug" weld the backing plate to the trans tunnel
hmm... I'll see about finding a write-up on the pumbing