Cutting strut rod bushings for correct geometry?

I read an article on a site detailing a road-racing '68 340 Barracuda about how most replacement strut rod bushings are too thick and push the strut rod back, putting strain on the lower control arm and reducing available caster. I want to cut mine and rearrange them so they work at the right angle but I'm not sure how. I have polygraphite bushings from PST and they seem like a pretty hard material, I can't think of any way to cut them that is safe besides a band saw and I don't have access to one of those.

That's my car or Matt Grubel's.

I cut it on a lathe. But you could use a hacksaw. Problem solved. Cost: $0.00

Here's some picture of the setup. I ran it from about 1995 to 2010.