I don't know if I've asked this before, several years ago, or not, but here goes. We have a fiberglass type free standing shower stall in the basement with the spiders. I would like to replace it. DH takes his shower down there. So I am asking for ideas on replacing this shower. Can I find a free standing shower stall that is just as sturdy as this has been for 30 + years?

Shower stall sits on the drain which is in concrete. The drain is 18"oc from the foundation wall. The stall sits forward from the wall by 2" and my PVC drain from the washer runs behind it. So that means the shower stall has a 16"oc drain from the stall wall. I'd like the stall to be bigger than 32" but I don't see how this would work. Unless there is a stall that is 32" x bigger". I could go 32x48 for example or maybe even 60". But I have to stay with the drain location, so the 32" dimension is fixed, I think. Unless there are creative alternatives. I have heard of those drains that run under the shower pans, on top of the floor, to the drain opening. But I don't know if they come with free standing stalls.

I'd like to improve the fixture too. I'd like a thermostatic valve on this setup. As it is, when ever water gets used elsewhere the temp changes drastically. I don't know if the shower walls would be strong enough to hold up a more robust shower system.

I am not interested in building stud walls for shower walls at this point. The basement can get standing water sometimes because the clay block leaks like a sieve. There is no foundation drainage on this old house. When we get saturated ground from heavy rains, water does come in through one of the walls, across from the shower. But I'll entertain anything.

Here is the old shower interior, but you get the idea that it would be nice to update and upgrade:

This is the outside stall wall where the plumbing is running. This is an old picture and the plumbing may be redone because of some other work we had done this summer: