Help! Hesitation & Sputtering!!!

Eyup--bad MAF will buck/ miss even @ cruise (you can ck for code 33 or 34 via ALDL port w/o scantool). If missing, etc primarily under load then it's likely ignition (coil pack/ICM) and/or fuel supply (typically low pressure/flow).

Good luck & you'll find the Scanmaster invaluable in both trouble-shooting and proper tuning...

You're definitely thinking properly in long term with LT1/LS1 MAF sensor + Translator...
 
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