wtb ec 300 cylinder&head

[hookedongasgas]

looking for ec300 cylinder and head for my 05 250

 

[Sierra Gasser]

S-3 cylinder & head kit

You might want to give this a try : https://www.ebay.com/itm/362081509427
email me at ntms1@sbcglobal.net with any questions.
Thanks !
Bob

 

[Zman]

Another option is to get your 250 head welded and cut for proper squish with the 300 piston.