i have been doing a bit of research on making a Led bulb that will fit into your current light housing/fairing.
i have found some 30w and 50w Leds, i'm just trying to work out which projector lense would work the best with it.
it will also require a step up driver for the led too,
they are about double the size of a matchbox, and can be remotely mounted, but they're needed to supply 30 odd volts to run the Led.
your first link, hmm, 60w halogen has a lot more heat radiated than a 35w.
and also a 60w bulb would over work the lighting coil too, wouldn't last too long
the 5w Cree led in the second link is very basic, it's light output is pretty low, up to 750 lumens,
i think they would be pushing it to get that much light from it
my 27w led light i used on my Fuse, puts out about 2160 lumen, that's what the seller states.
i still think somewhere around that would be a bare minimum