Mk3 MR2 is hard to find because… it’s so damn good.
Learn to drive it hard with the stock engine then swap a 2ZZ-GE or 2AR-FE in it and hit warp speed.
If you swap the spare wheel for 4x new good tyres and a can of tyre-seal then there’s a decent amount of space.
I’m currently in the middle of a 3week camping holiday in France with two persons, a nice 2man+ tent, cookers, clothes folding stools and lot of other stuff.
Bargain! (PS, buy on eBay etc, not PHeads)