Adding a lower Front Spoiler

[mc84_zz4]

I have been running a 69 camaro front spoiler on my lowered 69 firebird for many years without any problems. It does not even come close to overheating.

A friend of mine has the same, basically same temps you live with (here=San Antonio, TX). .
His car gets plenty of use, and traffic is hell sometimes. He's running a 400 tweaked a bit, mechanical fan clutch, stock sized aluminum radiator w/stock shroud, 2004R tranny, and tranny cooler.
Here's an old pic before it was lowered some more