HI. I can share that I tried an install of SCALE (from CORE) and had issues with booting. SCALE does not like booting from other than UEFI devices. Here’s the thread where I got ‘educated’ about this issue.
I eventually replaced the mobo and RAM with more modern gear. I was able to reuse the case and power supply, along with the boot and data disks. My old Gateway DX4860 had a microATX mobo, so form factor was no issue.