Other then doing burnouts, I wasn't much impressed with the 5.9 over the 5.2. Wasn't much more usable power, and the higher gas consumption was a draw back, 2 mph lower doesn't sound like much until the gas costs $5 a gallon.

Many of the transmission issues I've seen were in abused, or maintenance neglected, or that stupid check valve in the cooler line transmissions issues. They don't fare well when you blow a cooler line and run them out of fluid until they quit moving....

Sucky heater cores are a pretty standard things these days. The intake is a fix it ones and be done with it deal.