Talked with the Trick Flow rep at Monster Mopar Weekend in Norwalk Ohio, Summit Motorsports Park.
He says they are getting close to filling all back orders for heads now that parts are coming in, but the small block intake has no estimated time for shipping. Apparently the foundry that was casting them closed during the COVID crap and is not going to be reopening. So Trick Flow is trying to get set up with a different foundry.