Hey carguy2000,
been meaning to reply.
Since the wheel well and engine bay are 'no pressure' areas to paint ( meaning if you f up it isn't that big a deal)
You should try painting these areas yourself with single stage (no clear) urethane paint
or if your new color is metallic use base/clear system.
You have nothing to lose trying this.
For these areas you can buy professional paint but not the $1000 per gallon stuff. Go for the budget version (it's just as good for the engine bay) and buy a half gallon.
Reds are always more money but you should be able to buy a 1/2 gallon for $200.
Buy epoxy primer/sealer also.
Then buy a cheap HVLP paint gun for $100 and rent or buy a decent compressor
(min 30 gallon) for this type of job. You will need a air filter/dryer before the paint gun too. But you will own it all and use it again.
There are quality professional paints available in a can. There are paint co.s online that offer basic colors of real automotive paint in a can. But probably not the metallic color you are planning. If a simple black or white etc., this would be an option.
You should try it. Someone told me once a long time ago that "If you can read, you can learn to paint a car". He was right, because i did.
That is how i learned to do many things that most will not try.
Anything you want to learn is written about.
Good luck,-Matt