RS and GST body Difference

[Boxer132c]

I have an 2nd gen RS with a 4g63 swap....I know you guys dont think it is possible but it is ...but my question is...I want to get a turbo back Exhaust but I am afraid that the GST and RS have a different underbody but I am not forsure...So I dont know If I should just custom make one or order one for a GST..If anyone knows if they are the same please let me know

 

[Lunch_Box]

It is cheaper to get one custom made so that is what I would do. Or if you have access to equipment do it yourself.