well, I did a complete coolant flush, stock thermostat , ebay 1 piece aluminum rad that was 110 bucks shipped and then I removed my ac condenser because it sits rite in front of the rad. I added just 50/50 walmart coolant and now when driving the needle get 1 cm off the cold line and about 3 cm below the N on a 89 degree day with sun and a black car. I know its accurate because it will reach just above the N at idle and then the cooling fans kick on and I watch it drop instantly. when my cars driving even 25 mph in weather around 90 degrees the cooling fans don't even need to come on..i also do have a cai that runs into my fender and has a scoop on the bottom of my bumper to ram air at the filter as well as how the stock bumper inserts direct air at it too,plus I have a heatbox anyways to shield half the intake hose too and I kept rubber intake hose because it resists heat better than that aftermarket aluminum crap, P.S I used a blazer 4.3 intake tube to get the bend and extra length needed to route into the fender...
also taking out the ac condenser ur intercooler now also gets direct air ! what a stupid ac system setup and stock intake this car has.
now the pusher fan will put air directly onto the rad and the puller fan now pulls just the heat off the rad rather than the heat from the condenser on through the rad..
and befor I did these mods I didn't have any over heating problems but it shur as hell runs ALOT cooler now.