Jegs, OER, and eBay-vansautollc has brand new high back bucket seat frames 1970-74 Challenger only. My question is: aren’t the seat frames P/N 691-ME861010 & 691-ME861011 listed by Jegs & OER really all the same for A, B, and E body cars with high back buckets? P.S. I even tried asking Mark Worman but no reply is expected.