My guess would be the same as PKRWUD check the O2 Sensor, doesn't hurt to check everything while your at it. Does the Supra need alot of work or you guys just building up the engine for racing?
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1969 Mustang Mach 1**Sold**
351-4V Windsor, 4 Speed
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1979 Mustang Indianapolis 500 Pace Car **For Sale - Email me for Info**
302-2V, 3-Speed Auto
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