About Mustang GT X-Pipe and Flowmaster

I'm looking to get a x-pipe and some flowmasters for my 90 GT, x-pipes seem pretty straight forward but all the flowmasters I see for mustangs all seem to say LX? Is there a reason I'm not seeing any for GTs? Am I not supposed to put flowmasters on a GT?

I'm don't know why you can't find flows for a GT, there's plenty out there. Really the only difference between the two is the tail pipes.


http://mustangsunlimited.com/aspfiles/itemdy01.asp?UID=2004051909494841&T1=17116+01&Category=&catkey=74-01