I just put Magnaflows on my 69 that has a EFI 5.0. I'm running Hooker longtubes @ 2.5" with an O/R H-pipe, and dumps under the axle.
I've only had the car one day to rate my exhaust because the starter went out (longtubes are hot! :rolleyes: ). My first impressions are...quiet, very quiet. I...