All the stuff should be bosch or marelli so you don't have to buy genuine "alfa" $$$ parts here, go some where that stocks Bosch or marelli parts too for a price comparison.
The cap shouldn't be too expencive as its usually Bosch, the rotor can be expencive, look around. I got quoted over $100 for a rotor once, never bought it.
"IF" you find the rotor over priced where you are take the old one to an auto shop and they'll measure it and should be able to find something to match very closley. This is what i did a while back and had no problems.
HT leads and coils............theres a whole range of stuff out there from absolute crap to the best $$$ can buy.
Again the Bosch coil should n't be very expencive, get an oil filled one like the original, they original will be adequate or you could get something with a bit better "spark" like an Accell super coil
![Very Happy :D](./images/smilies/icon_biggrin.gif)
, they big yellow one! ($135 AU)
With HT leads generally you want a wire or copper core HT lead, don't get sucked in by the expencive 10mm HI PO sillicon "wow" leads. I made up my own copper wire core ht leads and they work great, next to no ressistance with them but you would get some radio interference from them. (Don't have a radio/CD in my GTV at the moment). actually they may effect EFI too????? i use carbs
Cap/rotor & COIL first the leads should be ok, leave them last.
If the plugs are a bit oily use the hotter NGK BP6ES plugs so there's less chance for them to clog up/foul etc