Hey guys My son has brought himself an Australian Mopar and wants me to build him and engine that will give him around 800 at the tires so I'm guessing I'll be pushing high 900s at the flywheel. I have built engines up to 650 at the wheels so only 150 HP short of the goal. I have used a magnum engine and used standard crank and standard rods with forged pistons. I run a solid roller cam and turbo. But I haven't built an engine the HP he wants. Has anyone here built one and run it reliably. I don't know if I may need to step up to forged rods and what the magnum block can handle. Will I need to run a girdle etc. Anyone here had any experience at 800 horsepower at the wheels and what is needed to survive.