Hi Andrew,
Not quite sure on the first question, I believe (but could well be wrong) that the 5 studs were fitted on very late 2002 S1 models, onwards.
On the retrim, I had a seat done for £80 but that was supplying the leather which the previous owner had bought with the car - so right colour,etc
regards
T

15 Weissman GT5
11 Aero8 SS
21 Q7
23 RR
24 Def'r 130
1960 XK150 DHC
1970 E-type
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