The highest output (Bhp / displacement) of any factory made model :

Lamborghini Gallardo MY 2006 series.

Lamborghini type :	Horsepower :
Miura Jota	111.703 Bhp / Lit.
Gallardo Spyder :	104.82 Bhp / Lit.
Gallardo SE :	104.82 Bhp / Lit.
Diablo SE30 JOTA:	104.221 Bhp / Lit.
Gallardo :	100.79 Bhp / Lit.
Murciélago LP640 :	98.52 Bhp / Lit.
P400 Miura SV :	97.741 Bhp / Lit.
Diablo GT :	95.961 Bhp / Lit.
LP400 Countach :	95.444 Bhp / Lit.
P400 Miura S :	93.932 Bhp / Lit.
Murciélago Roadster :	93.669 Bhp / Lit.
Murciélago 6.2 :	93.669 Bhp / Lit.
Diablo VT (1999) :	92.836 Bhp / Lit.
Diablo SV (1999) :	92.836 Bhp / Lit.
Diablo VT Roadster (1999) :	92.836 Bhp / Lit.
Diablo Millennium Roadster :	92.836 Bhp / Lit.
400 GTS Jarama :	92.663 Bhp / Lit.
Diablo SE30 :	91.960 Bhp / Lit.
Diablo VT 6.0 :	91.789 Bhp / Lit.
P200 Urraco :	91.274 Bhp / Lit.
LP400 S Countach :	89.845 Bhp / Lit.
Diablo SV (1995-1998):	89.333 Bhp / Lit.
P250 Urraco :	89.322 Bhp / Lit.
P400 Miura :	88.855 Bhp / Lit.
P400 Miura Roadster :	88.855 Bhp / Lit.
Islero S :	88.855 Bhp / Lit.
400 GT Jarama :	88.855 Bhp / Lit.
Espada Series II :	88.855 Bhp / Lit.
Espada Series III :	88.855 Bhp / Lit.
LP500 Countach QuattroValvole :	88.059 Bhp / Lit.
Countach 25th Anniversary :	88.059 Bhp / Lit.
LM 002 :	87.091 Bhp / Lit.
P300 Urraco :	86.782 Bhp / Lit.
Silhouette :	86.782 Bhp / Lit.
Islero :	86.316 Bhp / Lit.
Diablo (1990-1998) :	86.180 Bhp / Lit.
Diablo VT (1993-1998) :	86.180 Bhp / Lit.
Diablo VT Roadster (1995-1998) :	86.180 Bhp / Lit.
Espada Series I :	82.508 Bhp / Lit.
400 GT :	81.239 Bhp / Lit.
400 GT 2+2 :	81.239 Bhp / Lit.
350 GT :	80.831 Bhp / Lit.
LP500 S Countach :	78.881 Bhp / Lit.
Jalpa P350 :	73.171 Bhp / Lit.

Compare these rating to some other production cars, perhaps you'll be surprised, but at this time the highest rating in this category is actually taken by the Audi RS4 (MY 2000) with 142 Bhp / Lit., other cars who rank rather high are the Subaru Impreza STi 22B (126 Bhp / Lit.), even the Audi TT 1.8T (also 126 Bhp / Lit.) and the Lotus Esprit GT3 (121 Bhp / Lit.) rank higher than the majestic Miura JOTA. But you should note that the above cars all use turbocharging, the only Atmosferic engine that can compete with the Lamborghini's is the 3.6 Liter V8 engine from Ferrari, reaching 111 Bhp / Lit., just like the Miura JOTA does, also note the Honda S2000 has a 4 cylinder engine with a power output of 120 Bhp / Lit.