ok, so i have been running the ebay special T70 and am tired of always thinking its gonna break and shoot shards of metal into my motor. so i bought a Garrett GT42 cause its a beast. but after really looking at it, and deciding what i want my power level to be. its just to large of a turbo. so i been looking into the Holset HX40. but i dont know much about holset...

the power level im looking to achieve is in between 450-480 at around 22-28psi. my set up is a s5 TII with a medium sized street port. FD upper and throttle body. i'll be running a front mount (for now) and water injection coming on at about 5psi. and this will be run on pump gas (93)

i have only seen 2-3 dyno graphs with a holset as the power adder, but none have been in my power area. are these HX40's not meant to make close to 500 on 13b's. or am i better off selling my GT42 for a PT67,GT35???

any tips form the holset guys would help...