Weapons carriers are fairly bulllet proof hence why so many examples survive. Usual things are obvious rust in the body sides and cab mounts, engines can suffer oil leak fron rear main, ok if not too excessive, big job otherwise, they should run very smoothly with 30-50lb oil pressure when hot, any missing or uneven running could be valve trouble, crash gearbox, no syncro, brakes can be troublesome, master cylinder is prob going to be £100+? wheel cylinders £ 30? each, mechanical bits are readily available, but windscreen frames can be expensive if you have a rusty or damaged one. Dallas Autos is the place to speak to for parts and repairs. There has been numerous discussions about MOT and if the Dodge is exempt, I keep mine MOT'd. Does the one your looking at have all the canvas top and hoop frames? if they are missing youl be looking at up to £1000 for the complete set. Tyres are about £90-120 a piece, they are a great vehicle but thirsty at 10-12mpg but big enough to camp in, prices from £3000 for a runner needing bit of tlc, usually missing the canvas, several on Milweb like this, up to £7000 for a really nice one