Will a Magnaflow muffler work for 4.2L V-6, when you look at their website it does not list the 4.2L only the 4. 6 and 5.4 V-8. It seems like alot of guys on this site think that Magnaflow is the best and only way to go. Also does any one know anything about Spin Tech mufflers. If it says it will work for V-8s will it also work on a V6.
Thanks Bill

 

I had an 05 4.2 XL i purchased in March..put a maganaflow on after the first week..sounded pretty good for a small 6, naticed a bump in performance..not much , but anything helped with that truck..soiunds better than the flowmaster on the small 6..

good luck!