I post here as a guest but the fact is that I visit this site at least dailey. Not being the owner of a Cal.Spec. I find your discussions to be enlightening and helpful to people such as myself that are potential owners. I have been interested in the purchase of a well optioned vehicle but am at a loss to place a value on certain, or most options. I noted that one of the members mentioned having a value guide at some time in the future but have not seen it yet. What is your collective opinion as to the value added for these and any other factory options: AC,Power Brks, Auto Trans., Delux Int., GT Package, Lower Console, Upper Console, Tilt Wheel, Am, or AM_FM, or tape player, Tinted Glass, ECT---?The second question is which of the value guides do you think most accurately project the true value of these autos. For instance NADA, CPI, the little books at the the mustang shop, Old car Value Guide (the list goes on forever as you know. Please help me get straight on this so that I may purchase the right car at a fair price. Thanks, John Murphy MCA # 7600