P600B / Mac Headers/ FMIC: 4" SC Inlet Possible?

I'm trying to configure the above parts on my 1995 LT1 383 in my TA and run a 4" inlet. I'm out of room! Anyone here running this setup? What did you do?

I've concluded it is not possible to do this, so I'm going to try & run two 2" inlets and route them on either side of the SC and then combine them at the air filter.