Need other measurements from axle to axle

[Tony b]

I’m giving my dune cat a total overhaul custom restoration. Before I start to assemble it I want to use it as a template with a few layers of fiberglass. After the new shell has cured I’m doing to cut it in half, stretch it,then add more layers of fiberglass over the hole thing. The original dune cat measurement from front to back axle is about 46”. I asking for other yard carts names/year?axle to axle measurements for the next size longer so after averaging the longer sizes I’ll know how long to stretch it and possible donor frames I could use. Thanks ,Tony