Paul, the filters are re-pop vintage Amal carb. filters.
Clutch side:
http://i422.photobucket.com/albums/pp309/Opissant/126.jpgRob, the seat is clamped to the chrome seat rail.
http://i422.photobucket.com/albums/pp309/Opissant/P1010151.jpgBob, YES.
Dave, Keith, Steve, THANKS.
Pat, YES, IT HELPS.

I was telling Keith this morning, I've added a Bobbed fender, in gloss black, with the Bee-hive tail/brake lights mounted under the fender at the back.
Also added a rocker shifter.
I'm in the process of adding clip-on bars to the forks, with cut down upper shrouds that Z (Zmilin) sent me last week, to keep the "fat' look, while the clip-on's must be attached directly to the fork tubes.
When I get that done, I'll post updated pic's.