In-House Builds

Porsche 986 Boxster LS3 Conversions

Mid-engine Boxster LS conversions with engineered packaging, cooling, and exhaust—completed start-to-finish in our shop.

We Specialize in Porsche 986 Boxster LS3 Conversions

The Porsche 986 Boxster offers an accessible entry into mid-engine dynamics—and a compelling chassis for a well-engineered 986 LS swap. Chavis Performance & Engineering plans each Boxster LS conversion around the unique demands of mid-engine packaging: cooling airflow, exhaust routing, and long-term service access behind the seats.

Whether you want a streetable roadster with modern V8 torque or a track-oriented 986 Boxster LS conversion, our Baltimore-area shop delivers structured engineering and professional installation. We also support owners who assemble their own cars using LS swap kits and Porsche conversion parts developed in-house.

If you are weighing a Boxster LS project against other platforms, compare our in-house pages for 987 Cayman, 996 / 997, and 911 964 / 993—each chassis has distinct packaging and project economics.

Professional Porsche 986 Boxster LS3 Conversion Services

From first consult to keys in hand, CPE handles mid-engine LS3 integration with the detail your 986 deserves.

986 Boxster LS3 Engine Conversion

Full mid-engine LS3 integration for the first-generation Boxster: packaging behind the cabin, heat rejection, and service access planned for road and track use.

Cooling & Thermal Management

Radiator placement, ducting, and fan strategy tailored to how hard you run the car—critical on mid-engine 986 layouts.

Exhaust & Induction

Header and exhaust paths that clear chassis and suspension while delivering the sound and flow your LS build deserves.

Transmission & Manual Swaps

Coordinate gearbox choice with your LS package; explore Porsche manual conversion services when upgrading from Tiptronic.

Parts for DIY 986 Builders

Not ready for a full shop build? Source Porsche LS conversion parts and technical guidance from the same engineering team.

Post-Build Support

Ongoing Porsche service and repairs for LS-swapped Boxsters, including tuning and seasonal prep.

The Process

How We Work

Consultation & Planning

We map your 986 goals: street, track, or both—and how LS power fits the mid-engine layout.

Engine Selection

LS3 packaging chosen for clearance, heat management, and the transmission pairing you want.

Custom Fabrication

Mounts, cooling paths, and exhaust routing designed around Boxster chassis constraints.

Installation & Tuning

Full in-house assembly, wiring integration, and drivetrain setup.

Quality Assurance

Shakedown, adjustments, and handoff with documentation.

Reasons To Choose Chavis Performance & Engineering

CPE combines mid-engine LS know-how with transparent planning and parts you can trust—whether we build it or you do.

Focused experience on Porsche 986 Boxster LS conversion—not one-off experiments without repeatable systems.
In-house fabrication aligned to mid-engine cooling and packaging realities on the 986 platform.
Same shop that develops U.S.-made CPE conversion components used by DIY customers coast to coast.
Clear project documentation whether you choose a turnkey install or a phased build.
Integration with broader Porsche LS conversion expertise across 996, 997, 987, and 911 programs.
Optional custom Porsche aero and appearance upgrades to match your performance goals.
Located in Baltimore, Maryland with owners traveling nationally for specialized Boxster LS work.
Honest timelines and scope—so you know what mid-engine LS ownership looks like before we turn the first bolt.

Questions about timelines or shipping? Visit our Porsche LS conversion FAQ or contact the shop directly.