I've cracked two OEM flexplates in the past, one associated with a B&M shift kit (college days before I fully understood driveline shock), and the second, apparently 100,000 miles of wear & tear.
This time I went with the PRW Extreme duty from Butler:
https://butlerperformance.com/i-2445...Fq%3Dflexplate
Very impressed with how robust it is.