does the upgrade use a distributor with an optical switch or magnetic reed switch?

does the new distributor use advance weights or is it electronic

do they refurb your old dizzy or send you a new one?

Morgans 1934 MX, 1947 Series 1, 1956 +4 TR4, 2000 +4 T16
Triumph Herald 1969 13/60
Morris 1970