Do a search on Brian Hofer. He puts a stageright kit in his 200's and they work pretty well. I have made about 15-20 passes @ 15 psi with mine. No problems yet. Some of the guys have well over 200 passes on a Hofer/stageright tranny!
Whoever builds your tranny would be the best reference for what brake to use. It depends on the hard parts used to take the abuse. A stock tranny would most likely explode.....explosively.