So I have an XS cast manifold and after searching for wastegate options it seems as though it is either the baller HKS racing wastegate or a Tial MVR 44mm using the banzai adapter flange. I just wanted to see if there was anyone else running this manifold and what their experience was with different gate configurations. I have an extra A'pex water cooled gate laying around the garage which Im told will work using an HKS racing wastegate adapter (the star shaped one), however I cannot find this adapter for sale anywhere on the net.

I remember coming across a post where someone was saying they ran into clearance issues using an MVR, however looking at the adapter post in Banzais vender section it seems like it should be a non issue.

Additional info:
The car is more or less a dedicated track car.
I am running an XS T04X^2 (kickin it old school) aiming at around 500whp.

Thanks for any/all info.