$20 · WANTED: Big heavy old chainsaw

I need to make a tree trimmer attachment for my farm excavator. I'd like to adapt a big 2-stroke (all position) chainsaw with a minimum 30 inch bar. Heavier the better for this job... no chain brake required either. I'm prepared to repair an old, non-running saw to get it going again, tho' prefer solid state ignition... Please let me know if you have something that you think might fit the bill - thanks for looking Al 250 544 0668 (landline, so no texts)