Here are the specs for stock cams.
Not enough difference to make it a worth while swap unless you added 1.8 rockers too. IMO.
89 Manual
Intake .448", 194° @ .050", ICL 106°
Exhaust .457", 202° @ .050", LDA 110°
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89 Auto, 90 thru 93 All
Intake .445", 192° @ .050", ICL 108°
Exhaust .457", 198° @ .050", LDA 113.5°
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94 thru 95 All
Intake .427", 214° @ .050", ICL 113°
Exhaust .443", 180° @ .050", LDA 105.5°