The Mopar site has all the info on how to do this type of paint job. It's very much like the way a lacquer paint job used to be done. Prep, paint, sand, paint, sand, paint, sand etc.. The quality of the paint job was directly related to how well your sanding was done and how many layers of paint you would apply. I painted my 260z this way in 1986. As you sand you are always moving up to the next finest grit and removing the scratches and orange peel from the prevoius sanding. If some of your body work wasn't quite good enough you could go back a couple of grits and make the repair. Lacquer paint was a great way for a home DYI er to get a paint job. But, it had alot downfalls. Durabilty wasn't as good as enamel . Another reason is due to the solvents in lacquer and how it effects our enviroment. Lacquer also is brittle and would show hairline cracks real easy. Now, the roller job uses a oil based enamel and rustoleum seems to have some flex to it. It takes some finese to get a real show quality paint job but it can be done . I wanted to get as close to my 918 orange on my 73 240z so I went to Benjamin Moore and got their version of the Oil based enamel. They will custom tint this paint but I found an orange from their color chart that was a real close match. They call their enamel a modified enamel since it contains a urethane for added flex and durabilty. I've practiced with on my 240 and so far it looks promising. I mixed it with somewhere between 20 and 30 % mineral spirits. You know when it's too thin cause the paint will run real easy. The good thing is if you want get it right you can stop and add alittle paint. The roller paint process requires you to experiment alittle. If you screw something up it's easy to sand off and start over. Sanding does requires some techinque and skill. But, it's easy to get and understanding on hoe to do right. Painting in lower temperatures seems to have no effect on how the paint worked other than to slow the cure time. Just make sure not to paint below freezing. Try to paint in the cold with a automotive paint and you'll have all kinds of problems