I was looking for a used 5D (classic, mark i, original, etc.) and I have found one with the sensor allegedly replaced by the 1st owner, along with the mirror fix, also alleged. The camera is now being sold by the 2nd owner, who seems quite honest and candid about everything but doesn't have any documentation from Canon (it seems he tried to get it).
Now, should I be concerned about a replaced sensor? The price is not bad, considering he is adding a 50 II (which I will have to sell, though) and an RRS L-plate, all for $ 525.
Thanks for your advice in advance...