What's covered:
77 597cc 57 - 59
88 497cc 57 - 63
88SS 497cc 61 - 66
99 597cc 57 - 66
99SS 597cc 62 - 66
Atlas 745cc 63 - 68
G15 (Matchless) 745cc 64 - 67
Manxman 647cc 62 - 68
Mercury 647cc 68 - 70
N15 745cc 1967
P11 745cc 66 - 67
Ranger (P11A) 745cc 67 - 68
Sports Special 647cc 62 - 68