accuspark do complete conversion kits with new distributor etc for just £99.. David Atherton installed one of these on his H120 and made an article about it which appeared in the summer issue of cut 'n thrust.. maybe you can have a look a this otherwise I might be able to scan it in an post it up..
'68 Sunbeam Rapier fastback {B341006846 OD/LHO} '73 Sunbeam Rapier fastback {AAD 781863 } I like a car that looks normal but really knocks your socks off!!