hornsfan10609
Certified Mazda Tech
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- 2003.5 Mazdaspeed Protege x2
Yes you must get a G15M-R trans from a 2.0L protege or 626. The newer the better, the 03 or 03.5 had an upgraded shift fork. Yes you have to swap the LSD if you buy an open diff trans and it is recommended to get the LSD welded however i'm sure a new revised version of the stock LSD will last you just fine even if you intend to build the car. The stock LSDs have a horrible rep since they frequently failed but the revised versions made after 2006 don't typically fail.