best way IMO is pay a bulk lime spreader to come and lime your stuff, CHEAP and FAST, about 35-45 bucks a ton delivered and spread
next best cheapest is to find a old farm drop spreader with an agitator in it to keep lime from clogging up
some times the BEST way to find them is to drive about rural farm area and look for them laying about the property, MOST need tries and wheels and MAYBE a little welding and there good to go
bought and fixed and sold about 15 of them over the yrs
as REAL farmers don't use them anymore, and there just SCRAP to them, if approached nicely and when there NOT busy, be surprised HOW cheap you can take em away with CASH
MOST I have gotten, the best wheel tires to FIT without much effort is, tires and wheels off a the old GEO Tracker 4x4 fro,m salvage yards
the biggest issue I found over the yrs, is the center hubs on these old spreaders is WAY larger than any other vehicle's wheels, these geo trackers seem to have had ODD sized center holes, LARGE< a little grinding SOME times is still needed but not nearly as much as other wheels off other things, and I LOOKED thru about 500+ wheels one day trying to find better and came up empty! from old scouts jeeps, to modern things??
so a little heads up for anyone buying an older one with plans to fix up!