If you do decide to go centri you should go Paxton. The Paxton head unit is essentially the upgraded Vortech unit.
It'll give you some room to grow in the future.
Whipple seems solid though. Resale is much better and more simple to install.
I ran into that same issue and switched to 4an braided stainless steel.
Summit sells the 4an adapters and I used fast-turbo for the lines. Just measure your existing lines to see what lengths you need.
Selling my DSS aluminum driveshaft from my 6r80 car that fits 15-17.
It's been on and off my car a few times so I would recommend reaching out to DSS to acquire new pinion bolts as they have signs of stripping. You could use them if you wanted, but price will be reduced for this reason.