What is a 408???

So tell us about your experience with Blueprints 408, if you would please. Maybe stop someone from making a mistake.
Nothing but "so far so good" with the Blueprint short block I bought through Summit around May 2017. Did my research, weighed the options for my situation, read various bad and enough good to pull the trigger. Liked what I saw when I got it, and what Im seeing currently. My exploits with my build are on a lengthy thread elsewhere, so I'd rather not help any more in derailing the op's thead. :)