Hope your mates swapping it for a tb and about 3000 cash. Not really a fair trade a td for a tb. On the subject tho it really is personal choice, for me all my 4wd will always be diesel the torque is just amazing then add a turbo and a few mods and it turns into a monster off road. Not saying this isnt possible for a petrol but how the two engines deliver the power and how they produce it is very different. As for the noise you are referring to i have no idea, the TD42 isnt a noisy engine as long as you keep rockers adjusted and its in a good condition.