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Message: <blockquote data-quote="loafer" data-source="post: 531807" data-attributes="member: 10508">If the Getrag 220 gearbox can't handle the torque rating then my gearbox would have blown up on me ages ago.Please don't make silly assumptions especially when you don't drive a 328 mated to a Getrag 220 gearbox.Personally I think the limiting factor for the gearbox is actually your flywheel+clutch setup. If you get the gearbox off a 318, then obviously you'll be running the 8 1/2" clutch and flywheel. That might not be able to handle the power of a 328 but if the gearbox comes off a 325 then it'll be a 9" flywheel and clutch which is more than sufficient. Of course there will be engineering limitations to the gearbox as well but it can handle the brunt of a lightly modified 328 without any issues.While the ZF gearbox is nice to have, it's extremely rare and expensive to source. So for a 328 the next best gearbox would be the Getrag 220, with a 9" flywheel + clutch. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile    :)" loading="lazy" data-shortname=":)" /></blockquote>