I am looking to upgrade my turbo set up, which was a combination of Flying Miata kit with 960 injectors, LS coils, DS200 fuel pump, E85 and MegaSquirt with tune. This is a truck only car so I am looking to replace the remanning Flyiing Miata parts. Going to get Kraken Low Mount Manifold with EFR 6758 turbo, DW300 fuel pump, etc...

I have been doing a lot of research on EFR 6758 option and I can not figure out the best one to get and of course the best place to buy it. I know I would want internal WG, but I am not clear on other options that are available.

I am currently making 270WHP and 250 FT/lb. Looking to get to around 350HP at the upper RPM. I recognize the transmission issue so we will tune it with a boost limit at lower RPM to limit maximum torque. Once again, its a dedicated track car with a lot of aero on it so I am looking to gain some higher RPM power so I could accelerate better @ over 120 mph.