what power range did you want to be in with the 2J?
an HX35 would be awesome for an Auto-cross/street car.
if youre going for more, id probably say an HX40. you might have to mix and match turbine housings though. alot of people in the cummins crowd tend to think that the turbine housing on the HX35 has to be upgraded at my mod level. just for an example of where my truck stands, this is the mod list in my sig at cumminsforum.com
`97 Ram 2500, STD cab, 12v, #100 plate, tweaked AFC, Tabbed KDP, 4" Farmboy's turboback-straightpipe, BHAF, Polished HX35 w/o silencer, 47RE w/ boost reg'd throttle stop, 2wd, 3rd Gen SLT+ Chromes, 3.55's, PSI/Trans/EGT guages. "Throw some coal on'er!"
it probably sounds like jibberish but i expect to be in the 250rwhp and 550rwtq range. another guy put down the same numbers with similar mods and his power figures were actually low because hes over-fueling the stock turbo and his EGT's dont come up under WOT. he was running 34psi and his EGT's were in the 1200's. if he pulled some fuel out, he could make more power... and thats thru an Auto tranny.
So, considering people are putting down 550rwtq thru an Auto on an HX35, you should be able to do similar torque figures at your peak VE point. then just extrapolate the figures and do the calculation to get the HP figures for a general idea. i dont see why 600rwhp wouldnt be attainable on an HX35. what do you think Jon?
you could get an HX35 like what comes on my truck and get an exhaust housing from a 1st generation Dodge diesel. they have different DP flanges but have a larger A/R. oh, and HX35's are T3 flanged if you didnt know already.
the turbos i found are on CumminsForum.com. its not a fast moving forum so the classifieds arent flooded w/ them.