What jets for K&N pods? 1977 KZ 750

The title says it all.

My bike came with K&N pods and no stock air box. I am reading that you have to make sure and have the right jets or it won't run right?

Which ones are the right jets? Also, I live at 7300 feet elevation and how will that effect things.

HMMMM... pods means more air but high altitude means less air (it's less dense).

I'd start with 50 pilots since those always run best in mine. I would try the stock 125 mains since you should already have those. See if it runs weak at full throttle.

What kind of exhaust on it?

Stock exhaust but I am wanting to open it up a little more. Maybe not straight header pipes but something with less baffles. Looking for that throaty sound that is missing from it now and maybe a little performance boost.