If I had a bare set of 781's, how much would it cost to put them together to get them to "bolt on" status (assuming there is nothing wrong with them)?
What quality of parts are we talking about???
Valves $125-350
springs $60-300
retainers/keepes$50-150
guides$50-130
studs$30-55
guideplates$30-50
valve stem seals $16-30
mag/pressure test $25-50 or free with valve job
valve job/resurface/etc $200-400 depending on shop