Piston Slap: DIY Paint Job or DIY Body Prep?

Lenn writes:

Sajeev,

I’ve got a fairly nice 2004 Ford F-150 in a nice dark shade of metallic green. Thanks to a rather unlucky previous owner, most of the body panels have been repainted except the roof and the hood… both of which are in very bad shape (see above). Body shops have quoted me an average of $1,400 to paint both panels, which seems insane to me.

I’ve read a LOT and attended classes at YouTube University and feel competent in attacking a DIY paint job in my garage. My question for you and the B&B consigliere is rather simple:

What are your opinions on this and has anyone (not experienced in paint work) ever attacked this with successful results?

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