Anyone done a strong 400 build ?

True, unless you do some of the work yourself. But I completely agree some of the stroker kits are a very good deal. Our own @PROSTOCKTOM for example would be my go to were a big sack of cash to hit me in the head. I've always wanted to build a 400 based stroker and he'd be the guy to help me make it happen.
I have Molnar stuff but sourced my own because I can't afford a kit