My son has four of these for moving his 914 around:
https://www.harborfreight.com/1250-lbs-capacity-vehicle-positioning-wheel-dolly-61917.html
Very similar to the car jackers my brother has. I think they are the GoJackers HF compares theirs to, but not sure.
In any case, they are pretty convenient as you don't need to jack up the car to use them. They roll pretty nicely on his floor too, once the load is moving.