Hi all, for those who are looking for fitment of speedos and tachometers for all BSA from 1954 to 1958 go to
www.bsarocketmen.com go to the bikes and info page and click on the "More Photos and Info" link and you will find the info there
P.S I will list other years when i find the info

Andy (melbourne, Australia)
Rebuilding '54 Road Rocket