Finally got to it. He said he has them, they're definitely cheap enough. One issue:

He says "They'll work" on a Magnum 360. When i mentioned the slight balance/bobweight differences he said 'Its close enough". Says "people run it all the time".

Hmmm... That sketches me out a bit. I want it to be smooth. I've HAD it... and i do mean DONE with vibrating engines. Is the difference gonna be enough to feel, on a MAGNUM 360?

He also said it fits nicely into the contour ov a 10.5" flywheel. I wonder if it will fit the same way into a FW122 McLeod lightweight flywheel...???

I'm kinda getting used to the idea ov a 400+HP Magnum in my junk...