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V8 Roadsters LSx engine installation kit

An NA subframe with motor mounts.
V8 Roadsters LSx engine installation kit
Shoehorn a big engine into your little car.

Made in the USA

This item will be dropshipped from the manufacturer.


We recommend you contact V8Roadsters directly for this part. We have found it's easier for our customers to go straight to the source in this case so we no longer offer them through our store.

A well-engineered kit to put the aluminum-block LSx V8 in any Miata. This forms the basis of all our V8 conversions. It will allow you to mount the engine and a T56 transmission into the car. Any GM 3rd or 4th generation "LS" V8 can be used, including iron-block truck engines. You may have to use a different intake manifold with a truck engine, and the oil pan should be changed regardless.

The engine is pushed back as far as it can go. This will require some minor modifications to the transmission tunnel on NA and NB models, but it ensures the shifter location is correct, the weight distribution is minimally affected and there's as much room as possible in front of the engine.

The kit includes a new tubular front subframe that's 10 lbs lighter than stock, frame rail reinforcements with transmission mounts, lightweight engine plates with performance mounts, grade 8 fasteners and even a tube of Loctite.

The NA subframe uses the NB pickup points for best suspension geometry. The primary difference between the NA and NB kits are the mounts for the steering rack. The NC kit is completely different due to the different chassis.

Available for both RHD and LHD cars.

Additional Information

Additional Information

Part number S26-04010
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004 (non-MSM), 2005 (non-MSM), MSM, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014
Manufacturer V8Roadsters
Flyin' Miata exclusive No
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions No
Instructions for this part are not currently available online.