If the cylinders are still the original chrome plated ones, they are regarded as time bombs, since the chrome flakes off and goes through the oil system. The standard best bet is to replace them with Nicasil plated cylinders. Previously, those would have been Gilardonis, but now the go-to items are made by Meteor in Italy. Crustycycle.com has them in stock, and mgcycle.com lists them as out of stock. $350 per side, but easy to install, and an immediate increase in resale value, if that matters.
I agree with T Kelly's suggestion of $1000 for an unknown T3.