Congrats Simon you will enjoy that 700 grizzly for many years to come as for a 2 up seat I would highly recommend a seat from Rototeck industries they are made in North America I put one on my 700 grizzly and I am very happy with it here is the model # if you are interested 99RK-010 check out there website they have other models to choose from www,rototeck.com
Cheers Mitch