hi pal,
ive just the same to my efi orion, had the head done by cylinder head developements. just ported and blended with standerd vlvs
then used Kent cvh32k cam kit.
ok ut not much differance. manly i think the efi mangement doesnt allow the engine to rev well.not like the old mfi if you do the same mods.
oh and i fitted a K&N panel filter.
thanks
Dave