Darren have enjoyed the read. Maybe U will be able to help out with a common mod.

Induction - Came across your thread searching for Fatz and Radius Fab air boxes and snorkels.

CRD as U know but looking for improved flow, currently run Fabwitz SS rnd Airbox (K&N)/ 3" pipe to turbo / JT cooler (TMIC Tube&Fin). Looking to improve low down torque and run generally.

Like the Radius snorkel (fwd facing), build and cost. What Ram hd did they supply or did you by an other(type)?

Airbox - Too much stuff under bonnet to shift bits to fit Radius Panel LS1. Maybe the Fatz airbox (depends on function and $$s). Fatz say their filter box fits with 2nd battery tray, only need to trim radiator cowl a bit.

Your air filter, is that Radius Fab (eg: 100mm pod filter)?
What dia is filter can/canister, I am interested in radial clearance between OD of filter and canister ID and clearance between base of filter pod and bottom of canister.
Is the 4" inlet at base centrally fitted or offset?

Radius must be very busy, have made initial contact and waiting for follow up.

John