I have my 67 camaro in my sig completely stripped of all the drivetrain, front clip/subframe and want to go through and clean up the underbody/firewall to make it look nice. I was just wondering if anyone had any good ways about doing this because from the looks of it it will take a while and be pretty sucky. The bottom is all oily and greasy and it has a factory type of undercoating but no rust. Also what do you guys recommend undercoating it with?