Bob and Kate, these plans are necessary only if you plan to do super-heavy duty towing. I think the owner's manual says that the installation is neessary if the trailer is something like 5,000#s or more (Kate, please confirm the exact number, I don't have the owner's manual close by). For smaller/lighter trailers, a simpler installation like the one described in another post will do. As a side note, the "towing package" Imperial (that had rated towing capacity comparable to probably a modern 1 ton pickup, may be more) consisted of the trailer installation that Kate is talking about, and stiffer rear suspension. Also, AC was not available w/ the package as the place of the AC condenser was taken by a transmission cooler of similar size to the consenser (they may have been the same part!). D^2 Quoting Kate Triplett <ad_ablurr@xxxxxxxxxxxxxxxxxxxxx>: > Bob, the factory owners' manual that came with Lucille actually has > dimensioned plans in the back for building a receiver hitch - and the car is > certainly rated for towing! If you need to have the plans, would be pleased > to copy the pages and mail them to you - please reply off list. > > > Kate Justet Triplett > Kate's Custom Gunleather > Monroe, Washington > Proud mother of a soldier > and owner of "Lucille" 1968 Crown 4 door HT > >