LED turn signals

My rear turn signals are held on by gromets it looks like. The LED ones in the link have threads on them. Will these fit my 78 kz650 SR D?

cgi.ebay.com/ebaymotors/Kawasaki-Z-KZ-40...fPartsQ5fAccessories


Thanks

Another question I have is about the front turn signals. I recently installed superbike bars which took me all-fuckin-day. It looks much better than the stock bars, less of a poop bike look. Problem is, There's barely enough room to squeeze on the turn signals. Do motorcycle shops make clamps big enough to clamp the signal to the forks?