On rear fender stays you have to check length also. Goldstars came in three different lengths depending on fender style (English clubmans, US road bike or scrambler). I know you are building a B33 but lots of repro parts don't specify particular application and they all look the same. I personally do not like standard gear box ratios. They have a giant gap between 2nd and 3rd gear I find very inconvenient. I have heard the STD 2 is better.