I remember the article reusing the OEM stock parts for the build. That’s all there was back then. I’m not sure there were any stroker kits or just stroker cranks back in the 70’s at all. It was a smart move to look at all the parts and think about how they can be repurposed.
Here are a few of today’s options from Hughes engines.
They are all cast crank and Hyperutecic pistons for a closer direct comparison of parts used. The last one is the cost jump of forged crank & pistons as well as additional stroke.
Hughes Engines
372 = $1596
Hughes Engines
340 - 416 =$1676
Hughes Engines
360 - 408 = $1781
Hughes Engines
340 - 435 = Ka!-Ching!!!!!