R_34

Be carefull, compounding boost gives a lot of boost pretty fast. lol

Did you choose the drive ratio of the M90 yet ?
Will you use an aftercooler downstream the M90 or you plan to bolt it to the lower intake manifold somehow and running it like this ?

OrangeVirus1

Yeah I'm not worried about that, I know I will be getting boost quick. But my turbo still wont spool until at least 3k.

I haven't decided that completely yet, the drive ratio, and placement. I'm thinking on the lower manifold, with a custom adapter, but I'm also thinking about mounting it near the turbo, then the turbo route right into it, then the Supercharger goes to the intercooler then to the stock intake manifold.

It's still in the design process right now.

R_34

You might use the OEM AC compressor bracket and the AC tensioner ? If you still have it.

And I would install the compressor first, blowing into the turbo. Like this the M90 will not overheat the air if driven moderately (~1.4 PR), and the air will still be cooled by the intercooler.
And you'll have at least 5~6 PSI of boost. Not much but enough to get some grunt in low to mid RPM before the turbo went in.

At full howl at high RPM the turbo will have some preheated air but it won't be as bad as the other way round when the turbo will boost the M90 which could be damaged with such hot air if it's not intercooled first. And if it is intercooled first then the M90 will reheat.

I'm just sayin'

OrangeVirus1

I decided to torch the car