This may be a dumb question, but does anyone have an American Thunder System on a '98 Gt? Does it have just aluminized pipe or Stainless Steel (like the stock pipes)? I have searched all over the internet and am kinda confused. Every site seems to be different. Plus, does anyone know why the 98 GT system is different from the '97, '96?.

Again any help would be great. Thanks

 

I have the Force II system for my 97GT. It's a little quieter then the American Thunder. You can get the pipes (for the 97) with or without Stainless. I got the stainless, looks great. I have made a link for your system. It's Flowmaster Part #FLO-17215 and it comes with the stainless steel tips. $319.95

FLOWMASTER AMERICAN THUNDER

 

I went through Summit Racing and if you want to ask them anything about the part their number is:

1-800-230-3030

 

Thanks alot for the help

 

Not a problem, good luck with your catbacks.