All of which have potential to go wrong, unfortunately. It's a job I would try and avoid if possible, ok you're not going to do it for the sake of it but you know what I mean.

Bear in mind you might want a relay or two and a fuse before you burn your truck to the ground.

It's an easy job if the studs don't snap or damage the threads in the head.

Agree there should be clamps to attach to the gutters, no drilling involved.

Rear suspension bushes and A-frame bushes. Chassis damage to A-frame cross member or even trailing arm chassis mounts.

Mismatched wheels and tyres?

I would suggest you get underneath and physically check the propshafts. Even better take them off and check them, do you ever grease them? Take one off and drive it in diff lock see if the noise is still there.

There is a little metal ring on the hose, it should have the part number stamped on it.

Because the 1986 Landrover Ninety's had glass fuses not those moden bladed ones you have.

It's probably the green fuel pipe which rubs against the wiring loom for the pump. Known TD5 issue so that's where I'd look first. The replacement line is available on its own (YNI500030K), it's easy to replace and doesn't need the tank dropping...

Since the fuse box has been changed you will need to do as mentioned above. Since the vehicle isn't stock it's hard to say what has been done. Operate a few things and check which one clicks, then label them or you will forget for next time.

I used the cheapest sound pads from Ebay and they worked just fine. I then used a foam insulation from Vandalised, that also worked fine. Dodo is too expensive in my mind. Sound pads on the inside of the door skins and foam inside the door inner...

3 kids in 2 weeks? Blimey, she must be knackered and a medical marvel. 😁

Personally I think that in reality they are all overpriced. Expensive to own, run, fuel, tax, insurance and park now with emissions rated parking. Galv chassis would be getting on for £10k fitted so the sellers would want good money for it...

Apparently I need a 8 new office chairs from Ebay at this moment in time.

I hope you get some joy soon, it is a bit soul destroying at times.

Clean all the oil around the injectors, run the purge cycle and carefully watch for any diesel leaks around the injectors. In my limited experience leaking injectors doesn't stop it from starting a bad crank sensor or interference from a bad...

If you can see diesel then the seal must be leaking or the head is cracked surely. I don't think that would stop it from starting though.