Track Addict,
My Tucker is also a 2 belt track.. My grousers are 24" wide. Measuring from the center to the outer edge, I have 3 holes one @ 5-1/4", one @ 8-1/4" and one @ 11-1/4". This is going each direction from center, for a total of 6 holes for the 3/8" bolts to fasten the grouser to the rubber tracks.
I need some as spares and a couple for replacement if you want to split the them up with another buyer, but I'd be interested in all of them as well. Trying to help interested reader "Tucker" as well.
Thanks, Grant