Change shower stall drain in a mobile home

I would like to have a neo-angle shower in the 2nd bathroom in the house we are building, but the drain was not put in for this shape of shower. Is there a way to still put in the neo-angle shower and somehow adjust the drain over many inches?

I have a 1951 home that has a 1/2 bath in the basement. For resell value we would like to install a shower or a tub. There is ample room and a floor drain right where a tub drain would be located. When we first moved into the house, the drain was covered in carpet. I am not sure who thought up...

I am remodeling my shower to a roman tub. The existing drain is a weep hole drain. Is there a plug for these type of drains? The idea is to use the same drain system and hot mop, tile, etc. around it.