yeah those F3 logos aren't too plentiful or cheap
I am planning on sticking with the comstars. to each their own but I really love the look of the comstars with this more modern resto-mod/cafe racer look I am going for. I also like spoked rims on a more classic cafe racer too. I am glad to have a bike with both
I did already do the conversion. 17t/48t with a 530 x-ring chain. it's what I use on my K1, and its nice. works great, I wanted new sprockets and chain anyway so I did it all at once. I like that gear ratio and I have gotten the F3 up to 122mph so I don't think I am losing any speed over it. that's plenty fast for me. these old bikes make you feel like you're going faster than you actually are.
I will say that the F3 outruns the pants off the K1, but the K1 is much nicer to cruise around on, not to mention it is nicer to my back.