Brake upgrades depend on what you have already, if you have a solid discs you could upgrade to the vented discs and calipers off a 1.7 Twin carb or 16V 33.
I agree though that pads are the first option for braking upgrades before you do any major mechanical modifications.
BTW Simon- what have you got against EBC pads? OK they aren't up to Pagid standard but for the money I think they are pretty reasonable. Their service is pretty good too, they will bring anything you want out of the UK airfreight weekly without charging you the freight. I need some brake discs for my Fiat Coupe and they were not only happy to supply me within a week and at 1/3 of the cost of the genuine discs!
I heard that the early Greenstuff compound wasn't too good but my experiences with the current compound have been good.
I had some Ferodo DS3000's in my Sud for track days (still have the remainder of them somewhere) and to be honest I didn't think they were substantially better than the Greenstuff V2's I have also run.
I warped a set of discs using the Ferodos but have had no problems with two sets of the EBC's, maybe a coincedence.
Certainly the EBC Greens are a lot better for road use than the DS3000's, the Ferodos squeaked badly and didn't grip until warmed.
I have a friend with an Alfa 166 who used to go through a set of genuine pads every 20,000km, since changing to the greens they are still fine 40,000km later and half the price of the genuine pads...
As for the Lucas pads they are cheap, similar compound to Alfa OE and give you plenty of opportunity to clean your front wheels...
Depends what you want out of your brakes but I think you could do much worse than the EBC's...