Flare or not to flare...that is the question

[RPBurris]

So i have had my 1969 Chevy K20 for about 3 years now and have managed to keep it all in one piece and in good running order. The problem I am having is there are custom molded fender flares on all 4 wheel wells that probably looked great when they were brand new but are showing signs of age/rust/nastiness. The flares on the rear seem to be pulling away from the bed sides and the front fenders are just rotting out like a typical fender. So replacing the front fenders is easy (but costly) and replacing the rear bed sides is neither. So do I repair what I have and maintain the custom look or go back to stock? I am looking to go with a 2 tone flat paint scheme when finished (whenever that is). Just looking for some opinions from real truck guys who have seen nearly everything. Are they worth keeping?