So, I have a lead on a 62' 261 out of an old tow truck. I'm looking ahead as my 50' Coupe has a 235 babbit. Unfortunately the head is an 850 and not the 848, but I'm OK with that. I checked the block and it has the Captain Bars, so I think I'm good there. Are there any suggestions about what to look for in a good core? Should I be concerned about the motor not having the right oil filter system for pressure? Also, I've read that these heads can get small cracks from overheating. Is that tyrically something that can be seen? Anyways, It's all together and the guy wants $300.00 for it. Since I havn't seen to many around I was thinking about snatching it up.