J heads upgrade

Oh--just so we're all clear here:

I'm only regurgitating that which I've seen on here so you don't have to go digging too far.

X or J castings were a performance mainstay for a LONG time before any affordable heads came onto the aftermarket. W2s are terrific heads, but you have to invest another chunk of change for rockers, intakes, and exhaust just to run them...and unless I missed my guess, that's not what you're aiming for, so the necessity to deepen the hole in your bank account just isn't there.