the crossover off? Car is an Impala 3.4 with the thermostat in the miserable position behind the exhaust crossover. I have to do a radiator, but would like to do the thermostat because the car is getting warmer and warmer. Can I do this without an L shaped wrench? The car is my mother's; I don't have the car in front of me to look and try out extensions and whatnot. The vids I've seen either involve removing the throttle body or using an s-shaped wrench or an L shaped GM distributor wrench. Thanks so much