375 - 380 at the crank should have been easily do-able.
Yeah, I know . . . as good as 380 or even 390 might have been, it still doesn't have quite the same 'ring' as "400". Not even if the ET difference was under a tenth and the mph difference about 1.x.
'08 GT coupe, 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost stock height
'10 Legacy 2.5GT, 6M (hers)
'01 Maxima 20AE, 5M (spare, winter driver)