downpipe question!?

[scikoticWagon]

so I am looking at buying a downpipe to replace my stock one but what is the difference between a divorced one and one thats not? sorry if its a stupid question. I searched but didnt make much sense to me. Any insight is much appreciated, and whats a good downpipe to purchase?

[rage-wrx]

You can find info on exhausts here Exhaust FAQ

and info on downpipes here Downpipe FAQ: Read if you are thinking of buying one! - NASIOC