The plastic mount that the V2 has will support a normal e3d, though you may need to adjust the bed height, and you will still need to use your old fan/shroud.

I also believe the stock hotend is full metal already. The throat is separate, so if you want a replacement you can definitely get one.

I swapped mine for an E3d Lite because i was having a lot of jams in my stock hot end and wanted a different throat design.