As Steve said earlier in the thread, if they are 67.1mm for Maserati then you need 67.1 to 60.1mm spigot rings to mount the wheels snuggly on the Lexus hub and the bolts should be M14 x1.5. so I think you will need the equivalent tapered nuts to fit them to the Lexus studs.
Had a quick look at some Maserati specs
Center Bore / Hub Bore: 67.1 mm
Bolt Pattern (PCD): 5x114.3 (5x4.5)
Wheel Fasteners: Lug bolts
Thread Size: M14 x 1.5
SC430
Generation: Z40 [2001 .. 2010]
Engine: 4.3 L, 3UZ-FE, V8 , Petrol
Center Bore / Hub Bore: 60.1 mm
Bolt Pattern (PCD): 5x114.3 (5x4.5)
Wheel Fasteners: Lug nuts
Thread Size: M12 x 1.5
Wheel Tightening Torque: 103 Nm