Making some Cups. Need advice!

[tdave00]

I have to have a set of cups today and couldn't wait to have them shipped. I can't find any round pipe locally to make them out of. Can I just make them square? A cup doesn't set down into the seat perfectly anyway because the lower control arm is molded to fit the outline of the coils. So, just wondering.

Also, am I correct that the lower cups are only mounted to the bag and not to the lower control arm?

Gonna have my wife monitor this thread while I am at the garage, so please respond back with your advice. Thanks.