I have a holset h1 turbo for sale out of a 1990 dodge cummins. It has an upgraded 16cm exhaust housing for more boost and quicker spool up. This center section will also fit the newer wh1 turbo. Both wheels are in good shape and the shaft play is within spec. (it is at the upper end of the spec) these are cheap and easy to rebuild. I am looking to get $125.00. You will pay $150 alone for the 16cm housing which I only ran for one year. I pulled this turbo out to put in a larger one. The item is located in Rothbury michigan.