Trailer sales contract and warranty for a food trailer dealer

I'm looking for a freelancer to craft a trailer sales contract and warranty that meets my needs and helps me protect myself and my business. I need a standard contract with a basic warranty, plus professional advice on the legal terms and clauses that should be included. I am not sure what the conditions of the warranty should be, so I need some guidance in that area as well. I'm expecting great quality work and dependability, so if you feel you are up to the task, please apply.