Difficulty: Moderately Challenging
Step1
Don't actually pay alot of attention to things posted on this site as I have seen alot of misconstrued information. First off I have never seen nor heard of a junkyard having a special section for hearses. Second, hearses are not the most commonly scrapped vehicles. Lastly Cadillac does not build hearses, coach builders do. Know who built your car. Do a ton of research on it and you find things are a bit easier to fix and live with.
Step2
You have to be mentaly prepared to own a hearse. They are big, hard to park, bad on gas, and mechanics seem to think that all the parts to these cars are special parts. Most parts are custom to the car in question but the drivetrain, most of the suspension, and the front interior parts are what can be found on stock models. I had a mechanic try to charge me about a grand more for a transmission because it was "special". Know what is special to your vehicle and what is not.
Step3
These cars can pass anything except for a gas station. Mine gets about 8 in town and 12 on the highway. They can be hard to park sometimes. Expect to have people ask stupid questions about the car and tell you what you should do to it (i.e. make it into a truck). If you where to want to do that buy a flower car or better yet, a truck. Expect to forego your own nourishment just to keep these things gassed up.