New plastic for 90 conversion question

We have a 05 and have purchased the plastic and I found a tank online so we can put the 90ex plastic and seat on it.I went to order a seat and the guy told me I need to know what year the tank is so he can order seat.What is the difference in the years for the tank and seat?

I know there was some minor differences in the tanks for the new style. We did a "conversion" but I was lucky enough to get plastic, seat, and tank as a combo. Not positive but willing to bet any of the new style seats would work.