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Comprehensive guide showing which parts from a 1999-2005 Miata fit your 1990-1997 Miata. This compatibility guide is meant to be a reference point for 1990-1997 (NA) Miata owners looking to upgrade or replace certain parts with items from the second generation 1999-2005 (NB) Miata. Parts that are a direct bolt-on fit will simply be marked "direct fit", while parts that require other components or modifications will have more detail. **The majority of this guide only references non-Mazdasp …

The comprehensive guide to knowing which parts from a 2001-2005 Miata fit a 1999-2000 Miata.This compatibility guide is meant to be a reference point for 1999-2000 (NB1) Miata owners looking to upgrade or replace certain parts with items from the facelifted 2001-2005 (NB2) Miata. Parts that are a direct bolt-on fit will simply be marked "direct fit", while parts that require other components or modifications will have more detail. **This majority of this guide only references non-Mazdaspeed mode …

2003-2008 BMW Z4 Buyer's Guide (E85 and E86 Generation) This guide will cover all the different models and major options available in the US from this generation, the "facelift" in 2006, some of the common problems to look out for, and a section with our top picks at the end.  Thinking about buying a Z4 or just interested in learning more?  Continue reading to make sure you are equipped with the knowledge to make the best possible purchase decis …

We wrote this guide to help answer some common questions regarding Torsen limited slip differentials in NA and NB Generation Miatas. We'll be focusing on what the Torsen is and what it does, which cars they came on from the factory, the various gear ratios available through the years, what's needed to upgrade your specific year Miata, and some recommendations at the end.What is this "Torsen" thing you speak of?Torsen is the brand name of the limited slip differential available in Miatas from 199 …