Baby Huey ventured "Others have removed the 2 bolt bracket & replaced it with the 1 bolt bracket on the OEM coil needed to fit a C70"
So you can drill out the bracket rivets, then use small bolts to put the one-bolt brackets on the new coil, and the ground connection on the coil is okay?
That is great information!
I will illustrate this as a new How-To. If anyone can email photos I will immortalize the How-To with your name or web handle.
1970-73 C70 Honda Service Manual: http://tinyurl.com/6ebwtw
1970-73 C70 Troubleshooting Guide:
http://tinyurl.com/6ebwtw (scroll to sec.7.1 page 101.jpg)
1980-83 C70 Honda Service Manual: http://tinyurl.com/hu42c
1980-81 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec.18-1 page 170.jpg)
1982-83 C70 Troubleshooting Guide:
http://tinyurl.com/hu42c (scroll to sec. 20-28 page 205.jpg)
1980-81 C70 Maintenance Schedule: http://tinyurl.com/z4zn6
1982-83 C70 Maintenance Schedule: http://tinyurl.com/hw35c
More resources for C70 Passports and Cubs: