Need to lay 2 runs of 0 gauge from battery to boot to run all the alpine stuff and batcap 400, but not yet taken the panels up yet to see what space there is. Anyone got any idea's...

Hiya Rob.

It will be possible, not through any of the std cable grommets though. You will need to either open the exsisting one up or make another along side of it (my choice in your situation).

Will they be able to fit under the plastic trims aswell, or will they bulge like a biatch.

Best bet would be to remove the seat and run the cable under the carpet anyhow, plenty of room that way.