Corsa exhaust tip installation

[seabass]

Has anyone installed the exhaust tips from Zero Altitude Flight on a Corsa exhaust? They supply a cut off alan wrench to do it but even with that I can't get enough room to tighten down the 3 set screws. They told me I may have to remove the sill since not all cars or exhausts are exactly the same

I'd hate to have to put it up on a lift and some body panels removed just to get some polished tip extensions...

Thanks,
Chad

still not sure why I can't post as an owner etc in other forums