Im about to do the same thing to my car, as far as I know just undo the bolts and pull it right off. As for the engine bay I just started sanding that down, the best way i found since the paint seems to be real thin in the engine bay is to use a wire brush on a drill or use some aircraft stripper and a scraper, comes right off. Im also stripping the undercoating in the fenderwells and undercarriage, now thats a pain. A hammer and chisel seems to work best for me now. I lucked out in a few spots some type of fluid, maybe tranny soaked into the undercoating and made it like butter to scrape off but unfortunatly the whole bottom isn't like that. I just want to get everything down to bare metal, sand out and repair any drust then POR-15. Im gonna let the pro's do the body work and paint though.
Jim