None Ball bearing 63ar hotside 54ar compressor T3/T04e VS Ballbearing 63ar hot 70ar compressor T3/T04e

how does the 70ar ballbearing spools versus the .54 nonballbearing? Never heard of .70 AR, is it same as 60-1?

I want to buy that turbo, look please:
https://honda-tech.com/zerothread?id=433609

Is this a good choice?

MY engine specs: cr 9:1, B18C6, 1.2 bar boost daily, Haltech ECU, 3inch exhaust, meng tubular manifold.

Thanks for yll your thoughts.

 

I'm not sure how it spool compared to a smaller housing non ballbearing but I can tell you the .70 a/r front is a t04s cover. same as the 62-1 i used have from turbonetics. the 60-1 is usually a .60 front which is a t04e. The rear housing will determine how fast it is going to spool. the .63 rear should spool by 4500-5k in non ballbearing. I never had a ballbearing turbo to tell you how that will spool.