The DA there March 31 was around 3600ft @ 11:00pm with calm winds, so that would put you around a 12.7@105 at 0ft DA in calm winds no change in mods. So, with a dyno tune and decent weather, you'd be around mid-low 12s with a couple more mph on the big end.

 

I think your time is decent. You are running about what a Radix'd extended cab with a couple mods with an N/A truck that is likely very driveable. Having that many cubes is a thing of beauty.