Propane is for soldering,lol. Oxy acetylene is where you need it, but not for a ford. Those shouldnt be a big deal to get out, pull the clips and press. GMs wont have clips from the factory, and when the break free, they fly! If you are trying to do it under the truck, a lack of room is your enemy there. Drop the rest of the driveshaft, and get it on a bench, and they will pop right out.