My first question before answering is to ask you: are you a homeowner selling yourself or are you an agent? I ask this because you keep referring to a "listing". FSBO's don't list; you "list" in an MLS. All other venues are advertisments either electronically (craigslist, trulia, etc.) or via print.
Second: if you are an agent, you already know the answer , or you should. If you don't, may I suggest you take a refresher course on basic real estate contract writing.
Having said that, I will refer back to my original answer to your original question. The appliance allowance can be written into the contract as a contingency; the truck should be written up on a Personal Property Agreement (Bill of Sale), which is made a part of the contract but does not require fulfillment unless the property sale goes through and closes.
If you are selling the home as a "for sale by owner' (FSBO), then you can mention in your ADVERTISMENT (you "list" in an MLS service based upon a contract between seller and agent; all other venues are advertsements....) that personal property items are available for sale/negotiation such as the truck, etc.
May I suggest at this juncture, that if you are a FSBO, you may want to take some time to research in detail all the requirements you need to follow pursuant to state law. Even FSBO's have rules to follow.
Frankly, your best opportunity for you to sell your home and personal property would be to interview at least 3 top professional realtors and then decide which agency will afford you the best services for your needs. While many FSBO's feel they are saving the commission, in the long run statistics have shown that you actually end up paying more! Just a thought,,,,,
Tina Evans, Principal Broker