I don't want to sound cheap (well maybe a little)

A lot of people talk about using epoxy to blend in the bolt on lumps.. I guess if you match the expansion rates of the head and the epoxy there would be no problem with it cracking..

How feasible would it be to make lumps completely out of epoxy? (remove bolt bosses, fill in with epoxy and then shape into a lump).

This is just a crazy idea, just want some input..