Got a 66 coupe been working on for what seems like forever. Doing panel work for the last year prep'in for paint. Gotta 3:25 tracloc, custom C4, stock bottom end; typical street stuff. I've recurved dizzy (34* total by 3200K) and jett'd the Edl 4106 carb. I've been eye-balling the LM-1 and LM-2 AFR diagnostic kit, using wide band 02 sensors and scanner. Looks like a great tool. What are my options for a good performance tune without dumping $400-500. The 289 is strong, but expect to build a 347 or 331 as soon as paint is done. Reading plugs are a pain unless you've got an obvious problem. Is that Innovate unit worth the money? Are there other options to a good tune?