I,ve had my 79 TA since 1980. The best times of my life were spent DRIVING it. I love showing "Birdie" but nothing feels better than driving it. Yes, do the Nationals, but become a "Trailer queen". Protect the car during transportation and keep the miles down. When you get there DRIVE it! I've wasted too many years by letting the car sit. Your Dad didn't get to enjoy the TA experience, but YOU should! Hagerty Ins. Co. will insure you car, but you have to decide what the car is worth. Get a PROFESSIONAL appraiser. Many of the judges at shows that judge by points do appraisals, or I'm sure that Hagerty can tell you where to find one. They are very helpful. Mileage is just a number. You have to EXPERIENCE a TA!