LSx Valiant Build. Take a look inside...

That's awesome--I'd totally forgotten about those experimental pieces. I googled it just for grins and the first article I clicked on said the originals were fraught with issues, but eventually were recast with better alloy, valvetrain issues fixed, and were sold on limited basis (probably at a hefty cost). But archaic as those designs are, they're still cool to think about how people made more power back in the day.