I don't think I would use a 273-360 LA motor lifter in a BB work shruggy
Federal Mogul did make and sell some hydraulic lifters that where suppose to fit some of the late 1960s SB and BB from 1967 to 1970 work shruggy
I would think that those old solid lifter, if their more than ten years old., are probably better quality than the newer ones sold today work shruggy
Call Delta and ask them about refinishing the bottoms of those old solid lifters twocents
I had then refinish several sets of early Chrysler Fire Power 331/392 C.I. Hemi solid lifters that came with the 1/4 cup in them so I could reuse them in those older early Hemi motors, they came out great thumbs

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)