Your most likely going to have to fabricate that latch bracket, unless you can find a junk frame or someone who has one, then to cut it off, and send it to you to weld on. Im in the same boat, as my latch is snapped off, and I dont have the piece. As for the shrouds, they are really hard to find. You cant buy them NOS, and Maier dosent make them. I believe there was a member from australia named Ausiduner, who made some plastic reproduction scoops. Im not sure if they are the OEM style, or if they were remakes of the old school super scoops, I cant remember. I have also seen one guy (Ol Duece) make a set out of 350x scoops. He trimmed them down a bit, and they fit real nice, and looked good. That is the other option. Good luck!
THE 80's RAGE! Currently owns:
81, 85 Yamaha Tri Moto 125
83 Yamaha Tri Moto 200 x2
82,83 Yamaha Tri Moto 175 project
85 Yamaha Tri Z 250
84 Kawasaki Tecate 250
84 Honda ATC 70
85 Honda ATC 350X
84 Honda ATC 250R
(2) 84 Honda ATC 200x
82, 83 Honda ATC 185s
81 ATC 200
Lots of other parts and bikes