A dremel with a felt polising wheel and a flex shaft would be great for the hard to reach and tight areas, other then that a drill and a buffing ball works great, a find a lot of it comes down to the polish, i've had great success with mothers but i also got a chunk of green polishing compound and that seems to work really good. I think its more aggressive so it works quicker.I think i got a kit of different polishing compounds for like $15 at Princess Auto. Good luck and post some before and after pictures.