How is the center section different?

I know the Exhaust housing is taller and narrower then the standard T3, but I have yet to hear any info on the center section.

Thanks for any info.

 

this is from one of arturbo's old posts.
Here is what some say about Precision Engine and Turbo's turbo: yeah supposedly its a sick turbo. Precision wont give detailed info on wheel trims/sizes but their center sections are un friggin believable. More technology in them than anyone elses turbos....the center section actually spins inside the housing on ball bearings and insdie of that is the spinning shaft (thick) pretty damn slick. FFGeoff

 

there aint much info on them!!!