I recently acquired a 1977 LA 360 block and discovered this in one of the lifter bores. Some one please tell me it's no big deal PLEASE!!!! I was planning on building a stroker out of it but I think I'm screwed with this block. paid $300 for it. My guess is it's a gonner. Let's say I have to buy a new short block from an online dealer, what 360 (408) while mount up in a 1968 Barracuda with minimal if any altercations?