Exhaust probably fits, not just how it bolts up at the front end, that could be taken care of by any decent muffler shop(if they have to use an tubing it would be best to use mandrel bends, crush bends are not a performance item in the least.
Front brakes should be an easy swap,
I am not selling rears, they should be more than fine even on modified ST on track.
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Since this is Fiesta ST Network, I figured there are probably some regular Fiesta or more Fiesta/ST sites, any recommendations?
Thanks

Rick