Is it a hatchback car? if it is you can probably pull it off, but you'll have to be patient with it and practice your angles. not sure how big a 2 door trunk car is in the rear, so I can't say anything there.
just study a lot and don't jump into building.
Yes its a hatchback. Space wise I have 61" from back off seats to trunk, 43" across and 33" bottom to top to work with..If I were to do a wall that would change a little because of the angle of the hatch