Did you see Ford now has a supercharged v-10 made to run on hydrogen. The interesting part is it has forged internals which means you should be able to get the parts from a Ford dealer soon.
Click here for internal specs.
Engine Type, Configuration 6.8L 90-degree SOHC V10, cast iron block and aluminum heads with hardened seats
Intake Manifold Aluminum
Supercharger 3.3L/rev, twin screw compressor
Exhaust Manifold Cast stainless steel
Crankshaft Forged steel
Redline 5,000 rpm
Throttle Body Twin 60 mm, electronic
Valvetrain Hydraulic lash adjusters with roller followers, 2 valves per cylinder.
Valve Diameter Intake: 42.5 mm. Exhaust: 34.0 mm.
Pistons High-temperature forged aluminum alloy with low-friction coated skirts, ultra low oil consumption piston rings.
Connecting Rods Forged steel
Ignition Coil-on-plug, 9.5 AMP, Iridium- tipped spark plugs
Bore x Stroke 3.55 x 4.16 in. ( 90.2 x 105.8mm)
Displacement 415 cu. in. / 6,751 cc
Compression Ratio 9.4:1
Horsepower 235 @ 4,000 rpm
Peak Boost 18-20 psi
Torque 310 lb.-ft. @ 3,000 rpm
Fuel Injection Sequential multiport
Oil Capacity 6 quarts, with filter
Recommended Oil BP/Castrol Synthetic, 5W-20