IIRC, the interclub was kind of their base level "sport touring" bike, back in the 80's. Nothing fancy at all and may have low spec tubing. comthing maybe comparable to Peugeot PH10s., so a solid enough frame to mod up for performance improvements, but don't ever expect top line race handling or super light weight from it even after mods, as it was never its mission in life.
Chombi