If you just want them to hear it run buy some rings, plasta-gauge, a head gasket,and a tube of gasket maker. Check the bearings with the plasta-guage and if they are not too loose use them. This is if you have not already removed them. Yuo can buy bearings pretty cheap on eBay. Clean it up and put it together. With compression, fuel, and spark you can make it run. Don't put a lot of money is something that will have to be redone any way. Make sure the boys know this is just an exercise and not a rebuild. When you go to sell it be sure the buyer knows what was done. It will make a difference when you sell if the engine is a 230, 250, or 292.
