unless you plan on getting 300.oo I'd leave it in the car so the buyer can hear/see it running..
low miles or not.. if I can't see it run.. it's a core as far as paying money to buy it..
receipts for the parts/machine work will help..
1200.oo isn't out of line if you have proof of the work and parts..
but at 1200.oo I want to hear it run.. and be able to pull the pan and look at a main bearing..