Any gains adding 1.6 rockers to stock 273?

Cool looking cars.

You can either listen to us or go buy some rocker arms. But just know it won't make any difference.

Stock stamped or iron rockers that came with these engines are more capable than many people think.

Also if you're seriously thinking about more extensive mods long term, I wouldn't waste time with cheapo rocker arms. Plenty of places to go cheap and be alright. Valvetrain isn't one of them.