The card was a really tight fit (see photo). I got it off eBay. One issue I was having was that Quick Look wasn't showing JPEGs. I read up on it and thought it was my SMBIOS (which was 14,2). So I changed that to 17,1 based on looking up native profiles similar to the new graphics card. That did not solve the problem, however after more research, I found this kext:
Lilu plugin that 'fixes' opening JPEGs with Preview and Quicklook on 10.14 - vulgo/NoVPAJpeg
github.com
Installed it and Quick Look works perfectly now.
I did notice that running under the 17,1 SMBIOS was a little sluggish, particularly with the Finder and web browsing. So I went back to 14,2 and things seem to be peppy again.
I just ordered the Fenvi FV-T919. Its supposed to add continuity capabilities, along with better bluetooth and native wifi. I'll see how that goes...