Looks good. On my Tacoma I ran down tubes behind the dash from where your windshield bars intersect to the bar going across for the seat mounts. Actually fit in there pretty good and I think you could keep your dash like it is but the radio and heat would be in the way if your keeping them.
You would probably be okay without it, but I would try to sneak it in if possible.
Not sure what you have going on where the outer engine cage tubes meet the a pillars, but I would put a hefty gusset in there. Mine is a 7" piece of tube, 45 degree angle on both sides heading toward engine cage. I then plated over that whole triangle. When I was caging mine I kept reading about trucks cracking there and it makes sense. Lots of flex there. Adding that tube you are talking about would also keep that flex down.
Fab work looks great dude!
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