Oh my, you do have a conglomeration. To add to what Chuck said:
The clutch perch should be Domino but most any dirtbike perch w/ lever will work. The actual seat, hidden beneath the mammoth cushion, is correct but not properly attached to the tank. The rear brake parts are the same starting with the '89 TR34 thru the early Zero. Can't say if the brake pedal will work for you with that engine but I do have a source for the pedal only. I also have a parts list I could send you. PM me if you want to know more.
Some photos of my TR34 are here: Note the clutch pedal & master cylinder.
http://home.comcast..../site/?/photos/
Greg