just a couple other tidbits.....

i see this more often than not with rebuilt OE Mopar heads....the rocker shaft bolt holes are still full of crud.
these were particularly bad. one oil feed hole on each head was also full of gritty sludge.

the valves are sunk far enough that with aftermarket retainers the installed height was tall enough to need more shim than could be "located" by the register on the head, so i machined the heads for spring cups.
i also replaced the grooved iron guides with bronze pieces, and shortened them so they could be used with a .550-.600 lift cam, should that situation ever arise in the future.

measuring the head bolt boss thickness showed the heads had only been skim cut previously.
a spot check of one chamber on each head showed them at 90 and 92 cc's.
i cut them down to 89cc's, which will put the motor at about 9.5:1cr with a Fel-Pro 8519 gasket, zero deck, and TRW L2355 pistons.