Are the loop plugs in need of a reamer to the same degree the pencil plugs are? Wont the loop itself do some reaming as the old plug is removed?

If the 76 has already been converted to pencil plugs then the question is moot.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13