Yes the factory TD T3 [Vanagon ] pump LDA's are different. Set to the side in order to clear the engine cover. They have a limit to providing if you are looking for more than stock.
If you have a single or double cab, it's not an issue, but in the regular van the "flying saucer" LDA can interfere with the cover , depending if it's the original engine mounts, pump timing ,and whether you care if the cover has a big bump bashed into it to clear a regular LDA.