I tried it for the Magnaflow 16616 and it came out to $378.23.

As far for the other coupon codes, the following are for the Magnaflow 16616:

www.hottexhaust.com -

fordtruck8=$401.03

jetta=$427.41

instreb05=$443.24

So i think that http://www.performancepeddler.com is the best price for the Magnaflow Part Number 16616!

So fordf150.net=$378.23 on Peformance Peddler!!!