To stroke or not to stroke......

I dont claim to know alot, however, I believe the 4in strokers are not a good ideal I think you get in the 390 + cubes you are loosing rod stroke ratio and most heads cannot handle it either. Ive seen small engines blow by strokers a few times. I have a 3.58, 60 over 340. 378 inches. I think that is a solid number. Much more and it starts going the other way.
Just my .02

And BTW 400 hp is way easy on a 340 without stroke. My pistons were around $700 if I remember.
Hell I sell you my engine, carb to pan. Its making over 450 im sure.