the top head is a standard stage 1 1300 head with those valve sizes.
a 1600 should have 39.5 in and 34 ex,
so they are both 1300 if they are both the same size!
i would use the chambered head if i were you AS LONG AS your running flat top pistons!!

otherwise your compression ratio drops!
http://rcma.free.fr/escort/ford_kent_crossflow.pdf
there is some more info!!