Bill, hold your horses!!!
I just saw this...!!!
http://www.hlj.com/product/S27FP2044
Tyrrell Yamaha 023 upgrade set from Studio27! Not too expensive, and to my knowledge there's not another detail set around - might be worth grabbing before you finish this build. Unfortunately they don't show the parts, but I imagine there will be some helpful stuff there.
Cheers,
M