My frankenbike: Wanted FS version of my Yelli screamy 29er. ie short chainstays, 67* HA
£200 Ebay Cannonade Prophet frame, 650B rear, 29er up front, 140mm travel all round. BB was to high @ 15.5″ so I sent frame off and a frame repairer welded another BB underneath, now sits at 14″. I swap the same forks and wheel to and fro from my Yelli back onto this in less than 10 mins. Very happy with result.