We have a Camry 2003 model I think (it's the missus's car) and I wouldn't worry about fitting an 8" dob in it. The tube is approx 1200mm long and I have checked and it would fint the boot with room to spare.
The base on my 8" I could sit on the backseat of my Astra, so shouldn't be a prob in a Camry.
Give one of the local suppliers a call for the dimensions, thats what I did before buying my 12"!
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