Terry, as a neo"Z"aphyte, I can't offer any credible advice on selling your Z. Just don't do it 'till I can get over there and look it over!!!
I can hear you warming it up on Saturday mornings all the way next door to 'ya in Marlowe Manor!!
If you're looking for another project to work on, I could sure use some help (advice) on my '72 stroker .
Good luck with your decision.