So I totalled my 07 gt and now i'm looking at buying an 07 gxp. I'm pretty familiar with the l32 and l67 engines but don't know my way around the 5.3L v8 in the gxp. I've been googling on things to look for but since I'm under a time constraint since I need to buy a car fast before my rental runs out, can you guys help me with some quick pointers on what to look for? the one i'm looking at has 70k miles. Any help is appreciated.