I bought a turbo kit... car tuning.
I have 9.9:1 pistons intense stg 2 cam stg2 heads 110# valve springs and too much other stuff to list

My questions.
I have a giant 3.5" intercooler core air-air Im already using the m90 liquid to air phenolic Use both or just use the m90? *save weight*?
The m90 itself.... pull the impellers or keep them in

It is a ported housing and LIM, 42.5# injectors...
3.0" pulley

I have a small turbo that came with the kit but I will be upgrading it to the t78 I bought in the future.

I was wanting to know if I would be better off spooling the Big turbo with the m90. Should I pull the impellers or keep em?

Thanks for any and all advice.