Holley Pro Ram W-2 ?
If the manifold hasn’t been ground on, it’s easily worth 750-800 bucks. Maybe a bit more depending on how bad someone wants one. I think I paid 800 shipped for mine and I was glad to do it.
They aren’t making any more of them.
The carbs I can’t say but if they are tunnel ram calibrated my best WAG is 500-600 bucks each.
Add in 100 bucks for the linkage.