Is there any kit that offers a full frame turbo internally gated? Would be nice to have a bottom mount IWG G35-1050 for the A90. It would simplify installation and clean up the muck that 2 EWG make with having to run long dump tubes.
AFAIK only one currently selling an IWG kit is Big Boost. Doc Race also had EFR but as long as you're using a T4 turbo it should still work minus the downpipe v-band. They supposedly are willing to sell the old EFR EWG kits but they ghosted me twice on further inquiry.
Anyway, any regular turbo kit with external wastegates should work if you run EWG block off plates.