Welcome to the MacNN Forums.

I was looking on computer parts websites like pricewatch, but I cannot find any parts to build a G5. How do you get the parts to build your own G5? Are there any dual G4 motherboards still available? Maybe I can get the G5 case and put the G4's in to save some $$$. Thanks.

You don't. Apple doesn't exactly sell the parts. Service providers have to send back the broken parts when they make repairs. If they don't, they pay a TON more for the part. (Like 8 times as much.)

You will spend a ton more money building a Mac than just buying one, the same way that you'd spend over $100,000 to build a $25,000 Toyota Camry if you made it from dealer parts.

tooki