Another Super Victor?

Have a look at the 360 degree view on this Chevy intake. I believe this is what you mean by extending the runners. I recall reading articles in Car Craft or other similar magazine about John Lingenfelter doing these mods to a big block Chevy intake and seeing torque improvements. This was before companies case them like the one below.

https://www.summitracing.com/parts/bro-hv1000/overview/