Rear brake track rivet

[badbones]

I'm going to replace both heavy worn rear tracks on my 29 Tudor. It seems simple enough to grind off the old rivets but have two questions.

I plan on buying the new track from snyders unless there are better ones out there.

I know I have to red hot the new rivets but What technique to get the mushroom head? Is there a special tool or just smack it to flatten it out?

Thanks