I did the switch in march and its the best performance mod I've ever done on this platform. I was able to drop from a 3.4 to a 3.2 and added 4* of timing with PRJ doing the tune. On old plugs, old filter, and only a couple hrs he had me sitting at 20*. I'm sure there's plenty left in it but I said to not to push the limits as this is a DD car.

Car has zzp headers and 3" catback with 1.8 YT rockers as the main mods along w things needed for the swap.