Hi I am currently building a mercedes c280 (straight 6 24v) and was wondering what turbo to use?? Would a gt30 be too small??

I ve looked at a few bmw's and the ones I ve seen use eBay t70's ( I m not keen on the eBay turbo route)

I ve also looked at precision and holset

I am going external wastegate


Power hoping to see 450-500bhp