FPGA choice for PCIe Gen 2 x8 end-point

Folks,

I am new to these forums and it has been a while since I worked on FPGAs. Could someone please help me identify the FPGA that supports PCIe Gen 2 x8 controller? It looks like Arria II wont work for me (max Gen 2 supported is x4). How about Arria V and Stratix series?

Apart from the PCIe Gen 2 x8 end-point, I need to implement about 200k logic gates on the device. No other interface is needed.

Any help will be greatly appreciated.

thanks

sree