I had a similar experience with a vo-tech engine. They eliminated the auto shop in tech here and tossed everything. My friend works for the school district and clued me in. I got a complete Chevy 350 4 bolt main in pieces. Everything was new and all cleaning and machining was done. All the parts were top quality too , had high end connecting rods. I had to replace one rod because the kids had lost a bearing cap and they replaced it with one that didn't fit right and I bought a new crank shaft because the one with it was beat up on one bearing journal like someone had tapped it with a hammer. I know a place to get crank shafts for $100 give or take depending what you want, complete rebuild kit for $150 including cams, lifters, pistons, oil pump and all the normal stuff. All I bought was the one con rod from a friend here that sold it to me for $20 (he owns and auto speed machine shop here) and fresh rings since the rings with it had been installed over and over again. This engine was used for the kids to assemble for practice. Well that engine has now been in my wrecker for 4 years and was just driving it today.