I almost couldnt resist this one, I was looking for a 455 to use and found this Riv, owner said he parked after rod and then lifter noise, hasnt run since 89, looks very complete good luck, Paul . I cant post links yet but its northwest CT craigslist, under buick auto parts,
Looks like he has it listed in the cars for sale section- http://nwct.craigslist.org/pts/972484825.html