The 235 is a simple motor to rebuild. It should cost under 2000 to have the machine work done and reassemble it in your garage. You will also know your motor inside and out when you're finished. You have a bunch of new parts in that motor that are in good condition you won't have to replace.The shop manual has all the info you need to do it. Second choice, find a good one for less than 2000, but it may not be freshly rebuilt. Best of luck. Shops will often use the cheapest parts to make a few bucks. Make sure to put the best parts into it,(NEW OIL PUMP) in the long run it will save you money. The motors will run forever if done right. On a second note if the numbers match the car it adds to the value of your car.