550cc will get between 330hp to 380hp no more.
272 is good in some cars on a sr it gain a lot of power mid to topend ,but to run those cams you have to do a lot of work to the head .


the only thing you can do is show up and prove your madness .


my opinion i don't thing that a t3/t4 makes 550hp no even if it was build
i can see 300 pushing the crap out of that turbo.

if your looking for 550hp
i would say you need a gt35r,sc61,gt42r etc. no t3/t4