Any idea if there's upgrade parts for it? (hopefully aluminum ones!) I know I can change out the hub / key to the typical hex key, but then, it means I need to throw away those yellow Lunchbox rims..

There's got to be some, right?! It is the same hub for Grasshopper / Hornet / Midnight Pumpkin / etc.

If not, I guess I just have to pay that $9 + shipping and get the OEM parts from Tower... argh!!