I was reading more into the LMR Economy shortblock it says.
Our economy short blocks are just the ticket for that budget build! Our remanufactured short blocks start as good cores that are dissassembled, then placed in state-of-the-art, environmentally safe burners, followed by steel shot blasting to clean. The blocks are magnifluxed, inspected for cracks, bored and precision honed to manufacturer's specifications. They are then fitted with new, .030"-.060" over cast aluminum pistons and cast rings*. 50-oz. cranks are precision ground to recommended specifications, and micro-polished. Short blocks do not include cam or timing chain. Each economy remanufactured shortblock includes a 90-day, 4,000 mile limited warranty**.
Would that be boring it out 30 -60 over i guess you would never know unless they gave you a build sheet with what they used ??? So that would mean thats a 306 possibly ???