Perhaps this will be the wrong place for this topic, but I don't know where to post this. A friend of mine has a '67 Riviera GS with drumbrakes in the front. He likes to have a new set of wheels on his Riv, now he has seen 4 wheels for sale on the internet. These wheels are 15x8 and 15x10 and I really doubt if these wheels will fit on his car, also because the wheels came of a Ford... Anyhow, What is the maximum size of wheels that will fit this Riv, without any modifications? Thanks in advance, Bram