I've been contemplating making my tunnel removable. Is it really as simple as cutting the old one out or does the floor need to be reinforced some how? What would be the best material to use and how would I go about forming it without a palnel roller?

FWIW the car has a stock floor/firewall as well as subframe conectors and a cage.

Is this something I can do in my gagage or would it be better to farm it out to my chassis guy?