Cam & head upgrade 360 mag

-Do you realize that swapping to 4.56s will make the engine feel 4.56/3.55=1.28 or 28% bigger. Throughout the rev range.And the shifts will come much sooner and closer together? 28% is huge! It will feel like you put a big block in there, compared to the former performance.
-It is my opinion that before you spend a ton of cash, do the gear swap first.
-Right now; with the 33s,the 3.55s and a 5000rpm shift speed, your road speeds at the shift are 56,95,and 138mph
-With a swap to 4.56s, the road speeds at 5000 will be 44,74, and 108. That would be 12mph sooner,21 mph sooner, and 30mph sooner.
-Lots of good suggestions from previous posters.

FWIW; I've got dual 3inch exhaust on my little 367 cuber, and have never been sorry, even when I ran a low compression teener winter motor. They are a bit loud tho at WOT.