MacBook Pro 15" Early 2008 2.5GHz Core 2 Duo

My Broadcom BCM4321 card type 0x14E4, 0x8C has compatibility issue.

http://dosdude1.com/sierrapatch.html

What would be an upgrade that would function with Sierra?

I upgraded to 512 GB SSD and upgraded to 8 GB (6 GB recognized) RAM.

I think with WiFi card needs to be upgrade I should be able to upgrade to Sierra.