I have two Big Block 7.4 / 454 TBI. These appears to be bead blasted and new gaskets and seals installed. I don't know anything about them or what motor they came out of. I have two of them and the throttle arm seems to be different on each. I bought for a project and no longer need them. $175 each shipped.

Price dropped to $175 each shipped. They are also listed on eBay as well.

https://www.ebay.com/itm/264761788099

https://www.ebay.com/itm/264761790225

Both Sold!