for the S badge i would purchase a small black cable tie and a sticky back cable tie pad,
then using a dremil or a stanley blade,
trim down the pad to become a straight rectangle in vertical form,
then stick the S badge to the pad and cable tie it to the grill by putting another pad on the inside of the grill to grip it on the opposite side, this way it will sit flush on the grill. with no visible sign of the cable tie.
as for the exhaust tip, my exhaust tip is curved on the end to flew the exhaust gases down towards the ground and i think yours may be the same, so if you were to fit the exhaust tip on the second link above then you would need to remove the current length that comes from the rear silencer.
but the first one you linked wont fit your model correctly but here is another option that will fit your exhaust:
Thanks for the reply mate and great idea for the badge... That should work