welcome to the forum!! Just so most of you know, Ken doesn't build any motors. Hell, he doesn't make or supply any parts for that matter. He is strictly a middleman for everything on his site. His built motors which aren't his, are built by Dino at SC as far as I know. Same thing with SU. Speed Circuit does the builds. They are both middlemen. As far as built motors and boost goes, you aren't going to blow a built motor on stock boost, hell not even 10 pounds. With solid tuning, that motor will handle whatever you throw at it. But, then the transmission becomes the limiting factor. A built motor can handle more than 400. Everyone just says that because a specific vendor listed a certain rod at 400hp, but that was only said because that is already more than what the stock transmission can handle. So, to clarify things, on a built motor, you are limited to the 300-400hp range due to the limitations of the stock transmission. But when you add a built transmission to the equation along with a good quality LSD, you have then removed that limiting factor and your potential for more power become a lot higher...only limited by how deep your pockets are in the event something happens later on. I wish people would understand that instead of following the he said/she said crap about hp levels with built motors. Bottom line, K1/Molnar rods can handle way more than 400hp. Pauter rods can handle more than 700. The true potential of either rod has never been tested on the FS platform so honestly, there shouldn't even be any HP numbers listed for these rods. Tuning is the important factor on saving a motor from that dreadful moment. You can't predict how much power a stock or built motor can handle. It's stupid, people have said this crap for years now. Nobody knows because nobody has deep enough pockets to take the car to a level close enough to test the true potential of a built motor. Everyone's info is based off of what the next man said. Just like stock motor potential. Everyone used to always say "stay at stock boost levels" you will blow. But yet, people have turned up the boost and had no issues. Now, everyone says don't go past 10psi on stock internals. But yet, it has been done numerous times with no ill effects. It's all in the tuning and how you care for the car. If you are smart about it, it will last. If you are dumbass and boost all day long from light to light, stop sign to stop sign, the car will not last.