Sweet and Sour Pork

I got this recipe about 30 yrs ago (I know I'm old!) from a ward party we had. We have loved it ever since and is one the staples we love to fix.
1 lb pork cut in bite size pieces - cook until done in 4 T. oil heated or roll pork in flour, dip in
beaten egg and deep fat fry at 375 til brown.
2 small green peppers
1 small onion
1 carrot
Fry in 2 T. oil until veg are crisp
add 2 T. Ketchup and the pork
In a separate pan mix;
6 T. Ketchup
1 t. soy sauce
3 T. vinegar
3 T. sugar
1 ½ T. corn starch
1 c. water
Mix until sugar is dissolved. Add pork and veggies and heat through. Serve over rice.