The term "Classic" is a term only relative to the year of manufacture. I have State Farm, and I have full coverage, at a figure which I derived from Value Guides. Initially, they told me "No Way, we won't pay out that amount if you total it", but nicely requested a slew of photos to prove my claim of value. I probably took 30-40 photos of everything, exterior views, panel alignments, interior close ups, under hood views, tires and wheels, put the car up on a lift and took suspension photos, and on and on. The main office put a person on the phone with me and asked additional questions, I could tell they were concerned with modifications, even down to tire size. They ended up fully covering my car for exactly what I asked for without jacking up my policy. What I took away from that, was, they seemed to be more comfortable with it being original and stock appearing, and well maintained. Insurance companies see aftermarket wheels and immediately say "uh-oh". It would seem that vehicles with modified interiors, engines, paint jobs, exhausts, little boy pissing on Camaro stickers, and such, doesn't bode well with insurance companies. Immaculate maintenance works in your favor.