power??

what kind of power should i expect from a 1981 kz440a..w/ strait pipes, pods, port and polished head?

A stock 440 puts out 40hp on the crank according to Kawasaki. My guess is that would be approx 30-31 on the rear wheel.
The only way to measure it will be a Dyno test. If you get 35-36 on the rear wheel, I would say it's a good result.