More Engine Features

I wander if it is possible to built a much bigger 4 cylinder engine. For example i wanna built a 4 cylinder that is 8 or 9 litre (488.19 - 549.21 CI) that runs at 250 - 850 rpm Instead of building a 6 cylinder. This can be useful for big trucks. Ex. Packard Model 30, Hino Ranger. And is possible to reduce the rpm limit because you can't go lower than 2000 rpm.
And i wander if their will be Roller Bearing Crankshaft? (Honda and Porsche use this on their production cars). This will be cool for building sport cars.
Also i wander if you can add Ex. Honda's CVCC System and Exhaust Gas Recirculation since those reduces the emissions from carbureted engines.
Also a Eccentric Rod driven camshaft? (NSU used this on the NSU Prinz.) This makes the engine compact.
And Can You Add Like Small Sports Cars from like the 60's Ex. Honda S800, Toyota Sport 800, MG, Austin-Healey, Triumph, Fiat.
And Also Sleeve Valve and Rotary Valve.

And i wander if their will be Roller Bearing Crankshaft? (Honda and Porsche use this on their production cars). This will be cool for building sport cars.
Also i wander if you can add Ex. Honda's CVCC System and Exhaust Gas Recirculation since those reduces the emissions from carbureted engines.
Also a Eccentric Rod driven camshaft? (NSU used this on the NSU Prinz.) This makes the engine compact.
And Can You Add Like Small Sports Cars from like the 60's Ex. Honda S800, Toyota Sport 800, MG, Austin-Healey, Triumph, Fiat.
And Also Sleeve Valve and Rotary Valve.
