are the 1.2 ones different to the 1.6 gsi ones eg longer, stronger etc
All the driveshafts should be the same length and probably the same strength too. If there is a difference, I'd imagine it would be a larger number of splines on the end of the GSi versions.
well on the nova the sri/gsi/gte had a differnt number of splines (wheel end) and wer said to be a little stronger. however if you change them you also need to change the wheel hub.
this is only going off the nova though so maybe incorect!
also i know somebody who got a cv joint for a corsa gsi and i know it doesnt fit the 1.2's as thats what he got by mistake 1st time round, which backups what i said above about the nova.