Two Porsche 911s are on display at the 2026 SEMA Show in Las Vegas, each running a V8 in place of the flat-six the factory fitted. One is a 1978 911 SC converted by Jimmy Oakes to take a 4.3-litre Ferrari-built Maserati F136 V8; the other is a 2007 997 GT3 owned by Faruk Kugay that now runs a dry-sump 6.0-litre LS2.
Both cars are presented through Eneos Oil and are on show until November 6 at the Las Vegas Convention Center. Neither is a Porsche-built concept: they are private builds made to find out what else fits in a 911 engine bay.
The Italian V8 911
Oakes's car, a 1978 911 SC, carries the F136 V8 that was originally fitted to a 2007 Maserati Quattroporte. The engine is a flat-plane-crank unit, and Maserati and Ferrari shared engineering resources for years before that arrangement ended in 2023, which is how a Ferrari-developed engine ended up badged as a Maserati.
Marrying the Italian V8 to the Porsche required substantial fabrication. The F136 is mated to a Porsche 996 transmission via a Kennedy Engineered Products bellhousing, a custom clutch and flywheel, and an engine cradle built specifically for the conversion. Engine management comes from a Link ECU G5 Voodoo Neo 6, with custom Stainless Bros headers and exhaust, and individual throttle bodies adapted from BMW E90/E92 M3 S65 parts.
That throttle-body work is reportedly enough to let the F136 rev to an 8,000-rpm limit. The car also gained upgraded brakes, coilovers and a roll cage. It sat in the Eneos booth during the Rays Wheels Silver Lot takeover.
The drift-focused LS2 GT3
Kugay's 2007 997 GT3 has followed a longer path. It previously ran a Subaru STI EJ25 flat-four, itself an unusual swap, before being rebuilt around a 6.0-litre LS2 with LS3 cylinder heads and a dry-sump setup intended for sustained sideways abuse.
The GT3 had its first large-scale public outing during the Optima driving experience in SEMA's Bronze Lot. Few 911 GT3 builds discard both the standard flat-six and an earlier replacement engine within the same car's life.
Porsche has used V8s in the 928, Cayenne and 918 Spyder, but never in a production 911. That is the gap these two cars fill: they are not attempts to improve on Porsche's own engineering, but experiments in what the engine bay can accommodate.
What has not been announced
Neither build has a published power or torque figure in the source material, so output for both the F136 and the LS2 conversion has not been announced. The only performance number given is the reported 8,000-rpm ceiling for the Maserati-derived V8.
The two cars share a sponsor but answer different questions about what a 911 can become, one leaning on Italian V8 character and the other on a robust American V8 built for drift duty.

