Quick question... what are all the pieces to a complete exhaust? Is it HFCs>Y-pipe (if not a true dual)>mid-pipe>exhaust>tips?

It goes: headers --> mid-pipes --> Y pipe --> muffler. Four sections in total but the most restrictive are the OEM cats and Y pipe in my opinion while the best of those two in terms of bang for the buck is definately the HFC.

Whats better? HFC or LTH?