Did anyone's musclecar get Rusty Jones done to it?

[novadude]

From what I've seen, that stuff can sometimes start to peel if it was applied to a surface that wasn't clean, or just due to age. When it lifts, it creates a perfect pocket to trap moisture/dirt/salt, and it's all downhill from there. You'd be better off to have no undercoat when/if this happens.

If it hasn't hardened and started to peel, that stuff can be MESSY. I had a '76 Nova once where they had coated the inside of the 1/4s, and the trunk floor under the mat whe the car was new. You had to be real careful with what you put in the trunk, or you'd end up having your stuff coated in black goo.