what size bore is the Wilwood M/C? Believe it or not...Auto Zone sells a new M/C for an 89/90 dodge pick up 4x4 which has the 1 and 1/8" bore size for under $25 dollars. It also comes with the plastic top assembly! Now it is cast not aluminum but, a great deal for less $$$ I bought two of them last week and laughed about it. Just though you might want to check it out...after all that is what this web site is all about...sharing right???