can i adjust the sliding doors so they can open?
It is possible, there was talk on here before and I believe the person that has a HIGHLY modified rascal with a V6 or similar in it did it. Essentially the lower section of the sliding door can be cut out on the internal side and then re-welded.
E.g. from the outside it looks normal, but on the van side of the sliding door half of it is missing. This could be done as the door has an outer and inner skin, so you make it thinner on the inner skin.
Unsure on the weather proof qualities afterwards but anything is possible with some tinkering
