Bullseye BMX parts
Is there any way to convert my old BMX Bullseye hubs and cranks for use with my XXIX?
Yep. Sell them on Ebay for loads of $$$, buy Phill Wood stuff (or similiar quality) and have enough left over for a weekend MTB trip!
Your Bullseye BB should be the larger English size and will not fit your BB shell. The front hub will work just fine, rear is too narrow (120 VS 135 MM).
A few years back, I heard Roger Durham from Bullseye still had a lot of spare parts. Not sure how you could reach him, but someone at Vintage BMX would know for sure. At the least, I would use the front hub, just for memories sake. If you can get ahold of Roger, you will need axle spacers (may not be available in 135 though, but probably 130) and perhaps he will have a Euro BB that will fit your XXiXer.