My buddy has a 1999 cummins with an auto. he is looking for a 16 cm turbo housing. I have one on my 1997 manual and have had good results. I'm looking to upgrade soon though. any suggestions on a turbo choice on where I can get a housing for the 99. I also need a streetable clutch for the 97 and some tips on making the nv4500 a little stronger. Thanks