Cuda67Spain;
The 273 can be replaced with a La series 318-340-360 engine. Sell the Poly or use it in the Fury, just don't swap it into the Barracuda. Keep the 273 on the side. Some parts differ alittle bit. Like the timing chain cover. The timing marks on the cover could be on the otherside of the cover on a newer engine.
Also, the water pump could have this problem with the lower hose connection.
What year Barracuda is it?