For the 90, brakes, suspension bushes and shock absorbers, all available off the shelf I'm sure.
I could also do with a bonnet, a bootlid and a couple of doors but these are nice to haves - the ones I have are rescuable with time and effort. I have some interior spares but would like an indicator stalk.
For the Alfa 6, anything and everything but particularly a NSF wing after a BT Openreach van bashed into my series 2 on Thursday last week. My series 1 is booked in at the welders on 3rd Sept so I guess I'll need rubber bushes and suchlike with 8 weeks or so.
For the 75, an indicator stalk, orange reflector for the bootlid and, maybe, a pair of headlights. This car is unlikely to be started much before Christmas though so 75 parts are lower down the list....
I have LOADS of space so would consider whole cars, repairable or not!