S1 Extruded Uprights?

[ChrisJ.]

What date did the extruded uprights end?

[ChrisJ.]

Thanks Scuffers and Thorburn.

I'm thinking 2000 S1 with 12 spoke wheels etc.?

[ChrisJ.]

I now have a late S1 (2000), and it does have steel rear uprights.

[ChrisJ.]

I can believe the mix and match would be going on around that time of production.

I don't need a magnet, mine has the spindly type. Fronts are extruded type, but I guess all S1s had those factory fitted?