Anybody knows of a shop that does custom shower-cabins to replace existing one. Regular Alu-shop will not do, as they don't have the profile to build in the given situation. Tried this route already. THX. MS>

You have tried and they didn't tell you that they can supply large glass to use as shower ?

All the cabins sold around look so cheap that I prefered to select the best glass quality and fix them on the wall with stainless steel.

Try Home Mart. The big one across from Ambassador has a vendor who does custom and sends out their own crew for measuring. However, it was not cheap, but these are frameless and the glass is thick. As nice as anything I have seen in the US. ask for Mr. Tor in the bath department.

Good luck.