My setup consists of a built z6. Will be using a ramhorn manifold and a turbonetics .57 trim with a stage 5 comp wheel. Im only look for around 300hp. I need to know if a Tial 40mm wastegate will be too big? Too small?

Thanks in advance. I need some answers so I can pull the trigger on a deal.

 

Bigger than nneeded. U should use a 38mm