Stop in for a cup of coffee

16 gauge is actually right at 1/16th of an inch. 14 ga is a bit thicker! Not a lot of 14 ga in there but I am not familiar with your car? But I would guess @Icetech is correct 14 is like a welders dream, very thick. Remember welders and hookers have similar demands.
More heat
More rod
More money
i never thought bout it but 14ga would make **** sooo much easier :)