They should be the same, 1300 or 1147 engine, ARP has them but the website doesn't give all the specs. http://www.aptfast.com/APT_Parts/Triumph_Parts/t_Fasteners.htm Clark Clark W. Nicholls 1972 Stag (LE7931E), 1974 Spitfire (FM14571U) and 1 rusty GT6 needing new owner "Reality, it's not what you think."