Yes, such mods were actually quite popular. Here is one example: http://blog.tynemouthsoftware.co.uk/2020/03/a-zx-spectrum-with-80k-of-ram.html http://blog.tyne

Yes, such mods were actually quite popular. Here is one example: http://blog.tynemouthsoftware.co.uk/2020/03/a-zx-spectrum-with-80k-of-ram.html http://blog.tynemouthsoftware.co.uk/2020/03/a-zx-spectrum-wi... You can buy upgrade kits even today: https://www.retroleum.co.uk/spectrum-repairs-mods https://www.retroleum.co.uk/spectrum-repairs-mods