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Old 08-27-2012   #27
Join Date: Sep 2011
Location: CANADA
Posts: 93

GTA Year: 1988
GTA Engine: 305 TPI 5-Speed Manual
Re: Headers for 5.0L / 5.7L TPI

I will be adding the DD headers to my existing recently installed stainless steel Magnaflow exhaust... 3" from cat and exits out of muffler and believe it goes to 3.5" tips, everything mandrel bent. Sound pretty loud right now with stock exhaust manifolds, and yes you will need to use a new Y-pipe for the single CAT system. Check out the magnaflow website, this exhaust is just awesome for these cars!
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