new transmission will be more expensive then the car. your best bet is take it to AAMCO and have them look at it for FREE. they can give you a estimate of the repairs.
let me start off with that "Top Answerer" Ken K is a moron when it comes to answers.
your gas line needs to be primed. hold you pedal to the metal and try to turn it over a few times, it will start if you have enough gas in the tank.
ya could get parts from a salvage yard, they will torch out the part of it you want if you tell them for a small fee. possibly you local truck part store might have the peice you want, new.