Originally Posted by
LOVEMYRANGIE
98 will make it run smoother and feel a bit better down low but won't make a huge change overall. 95 is a good compromise with the occasional tank of 98.
E10 isn't suitable and should not be used.
Tweaks such as adjust timing to 9deg BTDC and making sure the vac advance unit is working correctly will make it silky smooth. Use genuine Lucas cap and rotor button and for a real top off, Bosch Gen III injectors. Easy job to do, easy to source on fleabay (SVO Mustang injectors 19lb/hr units) and make a world of difference to cold starting and overall performance.
Use the search function for the Gen III injectors, myself, Mike90RR and others have both dabbled in this and are more than happy with the results. The Lucas injectors are renowned for shocking fuel figures when worn.
I could go on and on and on, but....
Enjoy
Andrew