I am close to getting a mr2t and would like to ask a few questions to the 3sgte gurus here......but first....a PIC!

Anyways, its an sw21 with a sw20 jdm swap. It has a few mods, some cool, some....ehh. So here goes...
1. It has an HKS VPC/GCC....does that mean that I can run an atmospheric BOV and NOT backfire/run rich when I shift?
2. It has a LARGE (dont know what model) Precision turbo that doesnt spool till like 3.5k-4k rpms.....would YOU live with it, or swap for a ct20b or something else?
3. The turbo manifold is "4 bolt" (as the owner claimed). What turbos would bolt up to this if I did swap?

Anyways, its an sw21 with a sw20 jdm swap. It has a few mods, some cool, some....ehh. So here goes...
1. It has an HKS VPC/GCC....does that mean that I can run an atmospheric BOV and NOT backfire/run rich when I shift?
2. It has a LARGE (dont know what model) Precision turbo that doesnt spool till like 3.5k-4k rpms.....would YOU live with it, or swap for a ct20b or something else?
3. The turbo manifold is "4 bolt" (as the owner claimed). What turbos would bolt up to this if I did swap?