The frame is bronze welded, the forks are MP competition forks, Yokes are Marzocchi front wheel, grimeca front hub, and Rear wheel is period flanged Akront rim on BSA hub. Original GP swinging arm, Original GP Aluminium Tank? Original GP air box Original GP air filters. I have now made contact with the previous owner. His dad was a trials fan in the 1960, 1970,s and bought the bike with not knowing the previous history He started to restore the bike in the eighty’s but never finished it I bought it from his son who had it advertised as a GP Victor scrambler I was looking for a BSA to start pre 70,s motocross. Thanks for the information. All the best Peter