you have asked a number of "well...that depends..." questions. I'll try and answer some but others may correct me. It's a rumor that I may have been wrong once or twice.
1. The bike. What the bike is relates to the engine. 10hp=VT-10, 8hp=VT-8. Same identical frame but engines define the model. Just thinking, since you have the larger tire/wheel and forks, it was percentage wise probably a VT-10 so a 10hp engine would be correct. EXCEPT...you could get those forks and wheel as an option on the 8hp making it a VT-8. See? clear as mud.
2. If my knowledge is correct, most VT-8s came with no starter but had a charging coil for a battery. The VT-10s came with a charging coil also and electric start...BUT...again you could have mixed and matched an 8hp motor with electric starter if Heald had them in stock at that moment.. As always...clear as mud.
3. Rick Chatten or Ron Kimbal at Powertec are going to have to explain a little better...but...seems like I have seen Super Bronc on VT-7s and Trail bronc on VT-8s and 10s. I guess it depended if the spirit of the day was a single malt whiskey or tequila. In my mind, that about sums it up there..
Now, contact Rick Chatten on the boards here as he is reproducing the clutch covers. Just be aware they are of VERY high quality and priced accordingly. Don't forget the sticker for it.
Your bike looks pretty complete so a restoration will be easy. Between Rick and Ron at Powertec, you should find everything you may need. I would seriously recommend that you contact Powertec and buy the build sheet for it. It will be the best few dollars you spend.
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I hope this helps and I hope I got most of it right lol.
Doc