I thought I'd let some of you take a look at the project I'm up to. I have 5 turbos currently so now I'm building a hybred of my own for a carb turbo set up. As you can see there are some differences but the center sections are identical except for the intake adapter. The intake side of the turbos are different in size but there is a great deal difference in overall size of the housing and where the intake adapter mounts. The intake wheels are very different and the heights are the same but the overal size is different. The exhaust wheels look the same and the shafts are but the outlet size of the wheel is different and the pics just don't show it well. Both use the same bushings and seals so no diff there. The other diff is the outlet side of the exhaust housing. Much larger hole for the wastegate and 5 versis 4 bolt hook up for the wastegate.