Single turbo

[GriffEdward]

Hey team!

I'm in the process of preparing for a single turbo conversion and ive got myself stuck on what turbo to run !
Am looking for 400-500hp with minimal lag ( will be going forged bottom end in the near future)

Ive seen a couple of people use different turbos but i was considering using the Borgwarner s200sxe-52 with a 1.0AR housing but im abit worried that the housing is abit big and will be laggy and its the only housing i can find off the shelf . Or maybe a S200sx 56/65 with a .76 A/R
would appreciate some recommendations or advice as im abit lost with the whole turbo size thing, ive been more of a go from td05 16g to a 20g ��