So I would be able to run kb190 s with the j heads and a .039 head gasket and still be good with clearance but with a much better quench. Heads are still 1.88/1.60
Yes, there designed for an open chamber like the Js, I ran them in a .060" 360, had a XE284H cam, RPM intake, 750dp, compression was around 10.3/10.4, It was a torquey ****, ran on pump premium too.
