skid plate

Ok so have you seen those Rally innovations skid guard. the ones that protect the Bumper and radiator. Well i have seen no pictures of the underside. does it cover the oil pan like a skid plate or no. and if not is there any that does both?? If not i will be trying to make one. Tell me what...

I reeeaallllyy want to change the exhaust on my 2007 wrx sedan. However, none of the exhaust companies seem to make a catback system for the 07 or 08. They say its a problem with the rear skid plate. I would like to know if modifying the skid plate is something that I could easily do. If not...