I have Columbus cyclex 8 piece tube sets made of C & C tubes and SP mix. I sell them for 65.00 per set they are classic tube dimensions 1" top 1 1/8" seat and down 1 1/4" head tube. The seat stays are 16 mm and the chain stays are 22.2/24 tapering to 12.7. Compared to the Nova these are real 4130 treated steel tubes that will out preform and build a vastly better frame. since they are 4130 they will take silver lugged, bronze lugged or fillet and Tig very well.