Jim maybe switching from headers to log manifolds is what caused it to ping? The rest of your combo in the 79 is set up for headers.
Set up for headers? Tell that to the endless 11's out front! I don't believe in headers anymore. I've got enough extra horsies that the 10 or 15 you get from altering your exhaust is pointless. I can already fry the tires at will in any gear. That's with full traction bars.
![[Linked Image]](http://i23.photobucket.com/albums/b376/restorium/t_peelout.gif)
