ignition amplifier upgrade pre he v12

[keri]

can anyone clear up this issue i have i have a 1975 pre he xjs v12 still on its original ignition set up but showing signs of age ie poor hot starting now i know there are a few upgrade kits available for these engines amplifiers and dizzy i was given with the car a upgraded distibutor and amplifier with a lable attached sng barrett dab 113 he this i believe is for the e type v12 non injected and the one for mine would be dab113hfe fuel injected does anyone know the difference and does anyone have one i could purchase
many thanks
keri