u/PREDATHOR69

I love the land rover series 3 and defender's immortal design but they aren't bulletproof, so I'm thinking of swapping in a 3L hilux engine. I need your help because ive never done anything like this before + im running on a VERY tight budget. My question is, should i keep the original gearbox for less modificatios ? And do i need to modify besides the engine mounts if im keeping the landy gearbox (if you say it's reliable).

Note: this is going to be a daily + overlander.

I need the easiest reliable engine swap idea.

Please help.