Don't kill me!

I just made the unfortunate TEMPORARY defection to a mustang from a '73 Duster, mostly out of necessity as the Duster died and I need transportation. Man I wish I could have my Duster back on the road now. The mustang is way too tail happy and is absolutely horrible to drive in the rain. Any instance of throttle and the thing snaps the back end out of line....I thought only rice patty cars were supposed to do that....
Plus...I did have to get a plate frame expressing my true feelings towards the car: "I'd rather be driving my old Mopar!" Not on the car yet, still need to go pick it up from the shop that made it.
Please forgive me for my temporary defection...