What's the correct way to Prep and paint my 69 slanty.

Here's my 440 in Chrysler turquoise after 15 years. Applied POR15 turquoise paint with a brush after thoroughly cleaning and degreasing. It flowed out smooth to look like it was sprayed, which allowed me to paint it while still installed and not worry about overspray. The AC compressor is POR15 black too.
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Very nice. That's what I have in mind for my 69. THX