[DM3]

I have had a complete floor pan, firewall and trunk pan installed.

It has been painted black. I do not plan on driving in the rain or after the first snow.

Should I still coat the bottom of the car with some kind of protective coating?

I do plan on coating the inner front fenders and rear inner/outer wheel wells with line-x.

Thanks

DM3

[68tpls400]

What product did they use? If POR or chassis black, you should not need a coating. Its much easier to clean and / or inspect when you don't have undercoating hiding everything.
I've left all of mine painted (chassis black) since mid 2000's, and they still look like new.