New Exhaust for my Duster?

I currently have some kind of exhaust, but I'm not really sure what it is. Seems like standard manifolds (not headers), its all welded together back to an H-Pipe and then there is a bolt-on spot on each side. Apparently I could bolt up something from a mustang? I'm not really sure. After that there's some kind of straight through mufflers on each side that don't really seem to do much. I can post up some pictures/videos if anyone is interested.

So, what I'm thinking is, get some Flowmasters (Super 44's?), and use some fittings and/or flexible tubing to run just the couple feet to make some side exhaust right in front of the wheel wells. Anyone ever done a project like this so I could see what it looks like? I'm only thinking of that kind of tubing and fittings so I don't have to weld or pay someone to, since I don't have a welder. Has anyone used the flexible exhaust pipe at all either?