Indy LAX or J-heads?
Agree that it's time to retire the J heads unless money is really tight and you can do the valve work yourself
Been through the drill of oversize valves to raise the seats etc but you are most likely looking at new guides and maybe ex seats (or not they are tougher than chevy)
If the J heads do need work and you have to use iron heads then score some junkyard late heads, better chamber by far - most likely will need less work or the EQ's
and save your money for the heads you really want
agree on the W2 but AL would be cheaper if they need work