TRD Exhaust for a Scion Tc?

I am looking at getting the TRD Axel back exhaust for my TC. I bought my Tc used with 20,000 miles on it at a non toyota/scion dealer. Can I go to Scion and get a TRD exhaust installed, along with adding whatever it costs to my monthly payment? I don't want to have to pay 550 bucks straight up front for the... show more I am looking at getting the TRD Axel back exhaust for my TC. I bought my Tc used with 20,000 miles on it at a non toyota/scion dealer. Can I go to Scion and get a TRD exhaust installed, along with adding whatever it costs to my monthly payment? I don't want to have to pay 550 bucks straight up front for the exhaust, and if anything else, would love to add it to my monthly payment instead.

Thanks.
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