408 crank?

Hard blocking or partial hard blocking will help when doing the boosted higher horsepower builds with a stock block right?? I know there is a limit to that also....

Yes for sure along with a girdle. It's just that I've seen folks sold combinations that were destined to fail just based on asking too much from a stock bottom end. In nearly all cases it's the block that failed not the forged crank. Of course you always hear of one or two lucky individuals that can run over 500 hp and a shot of nitrous and get two or three seasons out of a stock block stroker. There are very few builders that will produce high hp short blocks with any kind of a warranty. It's the old saying "speed costs money son, how fast do you want to go?"