For what it’s worth, I have a Level10 rated to handle up to 700 hp, installed by a PO (who apparently shredded his stock AT5 shortly after flashing a Stage 1 tune). According to their site, they’ll build up to 1,000 hp... I imagine that means beefier components where it matters, but I’d hope for the associated cost that they’d reveal a bit of what exactly goes into it. Verbiage on my receipt says it carries a 36 month, 30k mi warranty, but to get the full 36mo/30k mi warranty you need to service it at their shop at 20k mi... not exactly practical unless you live in NJ!