Good grief I better re-value my vehicles. Not a negative comment but seen a #1 67 GT 383 Convertible go for 70K a year ago. And I watched it for a year before it sold, I wanted it soooo bad but $$$$. I use J.C. Taylor for insurance. I've never had any claims but my brother did and they were golden. Anything over 25K needs a appraisal. And you need to have historical plates for the best rate or they'll insure it for a daily driver also. Anyway as I said I really personally don't know about the ni-copper lines but please never use a copper line on brakes. You will wreck your car and maybe injure or kill someone. :)