prelude boot

[Magic_box_australia]

Is there a difference in the boot setup of the Preludes (92+)?
We used a customers prelude to make a fibreglass box then we trial fitted in another prelude and there was a 2-3inch gap under the box.
Ill attach some pics soon.
Im thinking some preludes have maybe another foam/plastic part that sits there for tools or even to support the floor if there is not a space saver tyre.

Here are some picture, as you can see there is a gap but from the angle we took the photo it does not seem like it is much of a gap.