Anyone know how I can find out what size my carb jets are and what size I need to change them to for some after market parts?

'81 kz650

Aftermarket parts:
High performance ignition coils
Pod style air cleaners

Also, should I getdifferent temperature spark plugs for my coils?

 

I don't think you need a different plug heat range for a more powerful coil. Plug heat ranges mainly apply to the actual engine operating temps.

Here is a link on bike bandit for stock replacement carb parts. It may be what you're looking for. This is an H1 KZ650 btw

http://houseofmotorcycles.bikebandit...650H1%29US.asp

 

Ya, i have the schematics and part numbers for the originals but the instructions to my coils say I need to get bigger jets and I think you said the same for my air filters. I just don't know what size to get. Or maybe I just don't know what I'm talking about.