X heads

Hey guys the seller says he indeed had them check had a few guids put in check for cracks.That is a good tip get the machine shop to wright something up.I have a set of 340 #915 202 j heads at the machine shop now but they need all new valves,guids,seats springs and retainers,havent heard about price to I am answering adds here to see witch way to go.Has anyone had heads rebuilt befor.what did you pay.Thanks.

Put in "a few guides"? For $750 they should have all new guides.