You should be able to fire it up and drive it away if you bring a new 12V battery with you, install it, then pull up the carpet in the back, pull off the big battery switch cover and flip the IMA switch off.
I drove Ron Burgundy for months with the big battery turned off, it was pretty slow without IMA assist but functioned fine (other than the AC won't work with it turned off)
If you try that and it doesn't work then the car isn't worth messing with no matter how cheap it is
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