Need 318 Gurus

You need to look at the casting number on the block on the starter side of the engines. You will have a casting number and towards the end it will have the engine size. Such as 318-4 or some such. It will be right behind where the starter would mount on the block on the driver's side of the engine. Those rockers are factory 273 rockers that have had aftermarket adjusters put in some of them.