anyone know what size optima yellow top battery will fit the battery tray of my '04 Supercrew?

 

I thought the "yellow top" only came in one size? I have one in my 05 and had one in my 03 Lightning so you will be good. Ditch the factory battery cover and make sure you get the little bag that comes with the Optima with the tray anchors so it does not slide around. You can see a peek of mine in my gallery