Scool it was not clear to me that the ez kit is designed to work on a Suburban. The mounts are different from those used on a pickup.
On a pickup you have the radiator mount, and the two mounts in the cowl area. These are the same as a Suburban or panel, and I'm sure those included in the kit would work.
There are two different ways cabs mount at the back. Early cabs mount with a center pivot, later cabs with straps off the sides of the frames. Suburbans and panels are quite different at this point, using frame brackets that are unique.
From that point rearward I would be cautious of assuming a kit designed for a pickup would work.
I say all this not have tried either kit, but have disasembled several of these trucks in my effort to gather enough good pieces for the ones I'm building.