Jeremy, nice to hear from you again. I should have bought that disco! Too bad you sold before ebay ran its course. The 53 SI is great. My advice is to be upfront about issues (not that you would not be -- only thing I can remember is the odd way the PO mounted the tub) and take lots of pics of rust prone areas (if I recall it was very rust free) and it should sell. BTW I am selling my 83 110 turbo diesel if you are interested. I will give you a great deal on it.
Best,
Ron
PS you know my email (evilfij at yahoo), give me a shout,