Updating to big sur?

Updating to <a class='btn-link text-primary' href='/2020/12/install-macos-big-sur-on-supported-pc.html'>Big Sur</a>?

First post here but could do with a lil help... (sorry it's long winded)

So I've had Hackintosh running on my pc for a few months now on Success' href='/2020/12/install-macos-catalina-on-supported-pc.html'>Catalina and recently I heard of the release of Big Sur and jumped right onto my computer to install it but only got errors. Today I thought I'd try again at this and see if I could do this some other way and instead I discovered the problem was not me (for once) and taht my computer was showing as as a late 2014 imac which I found out was not actually compatible with Big Sur and I was just wondering if there's a way to change what model of mac it's pretending to be?

Thank you all

TL:DR How do I change what mac my pc is pretending to be?

(Also my parts if you're wondering)

https://preview.redd.it/4mhepp50oo061.png?width=583&format=png&auto=webp&s=b2e4f3aeea3a6e6464cd28834bfbe8d3d98666ac

Author: @idontwantausername-_