MAC, SNAP-ON, CRAFTSMAN, etc. all have various sizes of the bearing / race puller tools available. After that you just needs bolts and a plate with two holes (or use the thing from a steering wheel puller set).
thanks. I have that set lying around in the garage somewhere so will dig it out and see if it fits. I saw this on eBay but the size of the pullers prompted me to post as I wasn't sure what was the correct size to use without measuring it. I thought a direct fit part might be available.
12 pcs Automotive Bearing Splitter Gear Puller Fly Wheel Separator Set Tool Kit. This bearing splitter gear puller kit includes dozens of parts help to easily remove bearings, inner rings, flywheels, drums and so on.
I removed my hubs recently on my 75/Milano. I can't remember whether it was a thread here or other forums, but I found this work-around that worked for me, using only a gear puller and mallet to whack it intermittently.
I braced the back of the axle with the axle from the other side, which in turn was braced against the shock absorber mount on the De Dion. I presume the GTV has the shock mount like the 75.
Might work for you.
If you want to use a bearing splitter, you'll need one bigger than in that set. I have a similar set, but the larger size was still too small.