Which is why I said no,a rebuilt 3.9 they did lasted about 100 miles before nearly all the valve springs broke from being coil bound,Skim the heads then the deck face and dont make it up with rocker pedestal shims and it all goes wrong.
maybe the guy who built it up had a bad day, made a mistake, rushed the job - who knows
I've had heads from Turners that have clearly not been through a competent QC department, or the added bonus of having chunks of swarf stuck to bores ....
as i said before, in the absence of someone coming up with a suggestion for another company (ideally one that's never made a mistake before) who can provide what the OP is asking for ......