Interior rocker panel to cab pan GAP; Help me do it right for the greatest longevity

[darkone]

Im getting my 70 chev cab ready for paint. I cut in new rockers and patch pannels, now i need to seal the gap between the cab floor pan and the lip of the rocker; (once again im talking about the interior cab pan to rocker lip).

I want to embed speaker wire and amp power cord within this gap. i was hoping to conceal my wires with whatever i use to fill this gap, effectively cementing permanently, top quality shielded wires and a power cord within.

My ideas are:
Seam Sealer
Metal Patch body filler (im pretty good with this stuff now)
caulking of some sort??

Concerns:
doors slamming and breaking out body filler
caulking not looking clean (its hard to work with silicones and silicones also have contraction at low temperatures thus seperating paint... EEEK!


anyway, any input would be greatly appreciated.
-dark