The Ofna is definitely more refined as far as responsiveness etc, but it was designed as a road racer, but what i love about the ERBE-gt build is it seems to be willing to take a bit more punishment. When i go out i take em both with me. If the road or parking lot is quite dirty with rocks and such, i will race the ERBE-gt instead of the GTP2e.
ERBE is a 360mm wheelbase vs the 325mm GTP2e yes.
As you can see in the early pics i did make a PF8gt fit the ERBE just by trimming the rear holes back a far bit. Looks a bit goofy, but it works and i can still run the rear bumper, so i didnt complain a whole lot.
Im actually just getting the orders together to do the 360mm conversion on my GTP2e
Here is a side by side comparison.