I have that tank in my parts basement, it can be made to fit. The part that slides into the front of the frame is different. It also has an extra hole for the fuel gauge. It doesn't follow the frame exactly like the 1st gen tank does but it's not really significant. The side covers consist of two parts, the silver covers are one part, the black inside is attached to the airbox. I'm planning on using the 2nd gen tank, airbox and side covers with a TL 1000 S tail.
Other differances are the swingarm, the tail which is a one piece tail and not 3 pieces like the 1st gen. Cockpit, seat, frame is a bit different around the engine and around the footrest plate area, the 1st gen has a plate that covers the frame while the 2nd gen only has a 2 arm support for the footrest, that's why they had to make the frame look nice instead of just using a simple steel plate. Passenger footrests are different. You could say everything is different, it's all in the details.