Rather than Jerry Rigging it, why not just put some aftermarket manifolds on there and call it a day? Like you said: Florida doesn't have emissions so it really doesn't matter. More than likely you probably have a cracked manifold.
Cajun Stage 1 $1470 shipped and is half the cost over manifolds that will fail again. Big hp/tq increases and no loss of mpg! Do your homework before you spend a dime.I have a 05 2wd titan and after 195k miles I finally got that code a couple weeks ago. Whats the best route to go for the fix?? and how costly are we talking?