wanting ideas on building a body cart for 70-74 a bodies

I made these up during the week to fit to my Aussie 1969 Chrysler Valiant VF Hardtop. I used 5mm wall steel and 300kg each castors, two of them are locking.

I bolted them into the rear leaf spring front mount and the engine K frame mount. The body sits on the wheel stands so as the majority of the weight is not on the bolts. Wheels around nicely and I can easily reach the centre of the roof for when I do the body work.