sorry for the n00b question but i'm new to the VX world

basically wondering what seats i can fit in my '02 SRi....

not a huge fan of the standard seats as they are a bit hard, not very supportive and sit slightly high for my liking.

coming from the Hondas, i know that basically any Japanese recaros would fit in my Civic so i had Mitsubishi Evo VII seats on integra subframes....

wondering if there's anything similar i can do with the Astra? i know that GSi recaros will obviously fit, but what other VXs/Saabs share the same subframes or bolt patterns?