Does it automatically mean that '69 Chrysler 300 engine block is 350 hp version, if there is no HP2 stamp on the block? My fender tag says it's TNT versiob (E86) but there is no HP2 stamp, so maybe previous owner has swapped the engine? Don't know the VIN number of this block because seems to be difficult to see it. Here's the stamp area of the block and I can see it's '69 block though.