I'm new here. I'm trying to find some info about Marathon PowerRack G series cases.

I have a G4 500 AGP in one of these cases, and I want to find out if the motherboard from a newer G4 will fit in the case. I know Marathon issued this case for G4 Quicksilvers, but I'm not sure whether a Quicksilver motherboard will go inside this case or not. (Marathon closed their doors a few years ago btw).

Some info I need is:

Are the motherboards the same size?
Would a G4 AGP power supply work for a Quicksilver?

Any help or tips would be great!! Thanks.