Yes, there are changes needed, to offset the trigger/EST by 60* (relative to crank).
There are a couple threads on here that explain the different ways to go about doing this.
Alternatively you could start with a bin that was used with DIS originally, such as the ones from the 1987 to 1994 Cavalier, though early bins could also have MAF enabled. Typically people use $A1 for this because it seems to be a little more refined than $88 and was the last mask that GM used for this application IIRC.
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