Lexus LS 400 1997 Manual Gasoline For sale: Lexus 400 engine. Modifications include: widened headers, new bearings, new valves, new engine seals. The engine system has been converted from distributor to coils, with a custom and organized wiring harness and start system. Full insulation has been done, along with a Haltech 500 computer, and a modified and widened intake manifold. In short, the engine is a racing build. Note: The wiring harness needs modification as it's for a race car. External fuel system, no A/C, keyless start. The engine does not have a power steering pump. If you take it for daily use, you must install these parts.