ok I have tried searching and come up short on my particular situation.

Current mods are
Turbo-old school green FP
Cams-hks 272,s
FMIC-ets 3.5"
Injectors-ID1000s
Exhaust-TBE Buschur
Manifolds and TB-ported 65mm and stock manis ported buschur
LICP- nisei
UICP and INTAKE-injen
Fuel pump-walboro 255
O2 housing- Megan
Fuel 93oct with E85 starting to show up more in PA where I live

So now Im torn between the red and black turbo

I am rebuilding the motor which is still healthy at 77k miles. Just want to strengthen it up.

I want GSC2 cams with the new setup. I assume I would need springs and retainers. I am gonna replace the seals and guides. Are stock guides and seals ok? Are stock valves ok to use?

For the bottom end I am replacing rods, pistons, all bearings. Does it really matter what brand I use? Open to suggestions what pistons and rods to get. Stock bore and 450awhp pump goal and 500 on c16 or e85.

This is on ecuflash where my old setup made 382awhp on a dynapack but will now be tuned by cbrd in york pa..

Any help will be great. I never had a built car so have no prior experience and want reliable proven info and combo on parts. I have searched but get steered in multiple directions and with working tons of OT I do not have hours and hours to search Ty