sprockets

I'm replacing the chain on a CB350 and am trying to determine if the sprockets need to be replaced as well. What do you guys think? front: rear:

Hi I've got 1983 CB400T. Wondering if anyone had experimented with different front and/or rear sprocket sizes to improve top end speed and how far is too far in terms of affecting rideability. Thanks in advance, Dan.

hello all, Was wonder if any one can pint me in the direction or has had experience with an aluminum sprocket from sprocket specialists? I fitted a 32 aluminum sprocket of theirs and there seems to be way too much play between the sprocket and the large lock ring/C clip. In and Out play of...