There is some rule that the engine has to be production based from the manufacture of the vehicle. Not sure which Toyota has a 5 litre V8 in it?
2UR-GSE
The 2UR-GSE is a 5.0 L; 303.2 cu in (4,969 cc) naturally aspirated V8 engine fitted to the Lexus IS-F, RC-F, GS-F and LC 500. It is an all-alloy DOHC, 4 valves per cylinder with Yamaha-designed high-flow cylinder heads, titanium inlet valves, high-lift camshafts and dual-length intake. It has D4-S gasoline port and direct injection, Dual VVT-i with electric VVT-iE inlet camshaft actuation. Bore and stroke is 94 mm × 89.5 mm (3.70 in × 3.52 in). The engine has a redline of 7300 rpm.
In the IS-F the engine had an 11.8:1 compression ratio and produced 310 kW (416 bhp; 421 PS) @ 6,600 rpm and 51.3 kg?m (371 lb?ft; 503 N?m) @ 5,200 rpm of torque. In the RC-F and GS-F the compression ratio was increased to 12.3:1 and output 348 kW (467 bhp; 473 PS) @ 7,100 rpm and 53.8 kg?m (389 lb?ft; 528 N?m) of torque at 4800-5600 rpm. The engine received a further increase in power to 351 kW (471 bhp; 477 PS) @ 7100 rpm and 55.1 kg?m (399 lb?ft; 540 N?m) of torque at 4800 rpm in the LC.
Applications:
2007–2014 Lexus IS-F
2014–Present Lexus RC-F
2015–Present Lexus GS-F
2017–Present Lexus LC 500