smokin out da back

I posted a little while ago about gettin a mach 1 engine on ebay but I think I'll just get the headswap done. My question is this. My freakin car smokes and I think I'll need to replace my piston rings. How hard would it to be to get to the pistons with the heads off? How much would they charge if I decide to send my car to the shop and get the rings done on top of the headswap. I know I'm diggin myself an even deeper hole doing this but I got in a car wreck and the insurance will be hookin me up in about 6 months.
Thanks in advance,
moonblue

I change my oil every 3500 to 4000 miles and its ususally down about a quart everytime. No smoke at idle only when it hasn't been run for a while or if I'm at a stand still and I give it gas I'll see the smoke. And its definately oil.