Fahad - Your Willys Jeepster is looking v. nice! On one of our off-road trips two Land Cruisers from UK (they joined us while they were on their way around the world) had similar tents which they had got from Australia. Very practicle for two people.
30 liter water tanks in the Ford F1 are mounted under the space in rear wheel wells so no extra space has been occupied by them. I guess there may not be enough space for that in your wheel well. I had them custom made from stainless steel with the taps located at rear. If you get permanent mounted tanks (for water or diesel) don't forget to have suitable partion plates installed - you need these to prevent the liquid from splashing around when going off-roading.
Can give lots of suggestions for equipping a vehicle for off-road (and other) trips - thats a long topic and would leave that to sometime when we meet!
Will be posting more pictures of the Ford's interior and other details in due time - right now busy doing the needful for Eid holiday trip on the Ford to Islamabad.