Replacing stock exhaust with V&H 4 into 1

I am simply replacing my stock exhaust with a Vance and Hines new 4 into 1 chrome Exhaust from Z1 Enterprises. I like the stock air box, that is what i have. What is the adjustment to the carburetor that needs to be done? I can remove jets and replace/swap easily if i can get the right ones, also can move main needle attachment up or down if necessary. Carbs work great with 4 into 2 but exhaust is shot, broken, rusted and fell apart when removed. Shoot me to the right archive if there is one please! Thanks

Get you the Dyno jet kit. Comes with everything you need and instruction for which ever mods you have.

Being in the 6K' of Denver, I would say you should be ok as long as you stay above 3K'. Try it and check your plugs. I had my bike in Colorado Springs, with the V&H with stock jets.

Oh ya, duh. I have a '77 KZ650 B1 model. I like the idea that stock may work as long as i don't lean it out by going to low. In fact, i like to do the high mountain passes and some are over 12,000feet. Ill check the plugs so i don't burn a hole in my pistons
Thanks!