1970 K/20 LQ4 Headers?

[67-KY-72]

Hello all. Currently putting together a 70 K/20 with a LQ4 6.0 LS. I've done some research here about engine crossmembers and decided to go with the Dirty Dingo x-member, along with their slider engine mounts. DD recommends the Schoenfeld 1302LS1 headers or the Holley manifolds for 10-15 Camaros on their site. Does anyone have any experience with these headers on this setup?
I've also been looking at the Speed Engineering #25-1025 headers....I really like the looks of those, but their site states for C-series only. Has anyone ever tried these on a 67-72 K-series with the DD X-Member?
I appreciate any input. Thank you!