mac pro 1,1 a1186 with 2,1 firmware

[rmx77]

just recently i ended up with a mac pro 1,1 a1186 with all original hardware the original hard drive original nvidia geforce 7300 gt 256mb of video ram, 2 xeon dual core processors at 2.66ghz 16gb of system ram. i do have this machine running 10.7.5 lion. one thing i find odd is this one doesnt have the add on wireless/bluetooth card. one thing i have heard is that u can hack the efi or uefi or firmware and actually get this thing to run newer oses up to 10.11 but i am not one to do mods to os stuff or mods to firmware cause i wouldnt want to end up with a boat anchor but hey it is what it is. hope to be able to use this machine as a daily driver. also hope to be able to find upgrades for this machine video cards, more ram, bluetooth and wireless cards etc...