35r is overkill for 450whp on that.
$0.02
like mentioned before, for the results you want, 30r would probably fit your needs the best
IMO, the 30r would be a better turbo, but you would have some small traction issues with it kickin in so soon. the .63 35r would be like the middle of the road, and the .82 would be hard hitting power in the upper RPMS…but that could create a totally different traction issue with it being an On/Off type thing.
I would go with the 30r. If you buy your own SCT package for the car i will be more than happy to help you tune it, thats what im using on my focus
30R or the dual ball bearing 50 trim. If you’re going to use pump gas mostly, go with the DBB 50 trim. That turbo will give you the best pump gas numbers, great boost threshold, and still meet your goal of 500whp on race gas/high boost.