Great news. I took a closer look and the brake lever arm just barely touches the headers. So I cut a quarter inch off the corner and adjusted the brakes as far as I could, and it was enough. I've got brakes!

I'm still going to upgrade the brakes though, because the originals aren't that powerful.

Took it out for a drive last night and it was sweet. The 350 pulls so much better than the 235 did. It's got plenty of strength. Feels like I've got to adjust my vacuum secondaries so they open sooner. But it's nice. I'll get plates on it this week and it'll be on the road.