Any body useing a stroked gen 3 hemi engine in there race car?

Oh Yeah! When it comes to maximum power, they make everything that isn't a Gen2 Hemi obsolete. They're are plenty of boosted 5.7 builds that make in excess of 1000 hp with ARP studs along with aftermarket rods and pistons. But the struggle is very real. As good as they are, they're still so different from everything else that adapting them to an older vehicle is usually a major undertaking and expense.