$250 · Performance world 4l80e heavy duty flex plate
ManufacturerChevrolet
New performance world heavy duty flexplate, bought for a turbo ls build running the 4l80e. Please see specs to see if it fits your 4l80 6.0 combo. Will trade for sbc stuff.
https://www.performance-world.com/SFI-29-2-Flexplate-p/362348hd.htm