I don't have the '63 codes in front of me, but I'm pretty sure 22B is going to be a '64 389, manual trans, 235hp. The 9770716 heads are '63-4 389 (GTO) or 421 heads. Check by the distributor for a date code to be sure.
Can't help with the "T". What's the number farther over to the left??
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Matt
1962 Grand Prix - Cameo Ivory|389 4sp|One-Owner Survivor
1964 GTO HT - Silvermist Grey|389 3x2s 4spd|A/C|Hurst Wheels|Frame-off|SOLD
1965 GTO Post - Mayfair Maize|421 3x2s TKO600|Pro-Touring|
1966 GTO HT - Barrier Blue|389 3x2s 4spd|Red Fenderliners
2005 GTO Coupe - Yellow Jacket|Magnacharged LS2 6sp|543hp/561tq|SOLD
2006 GTO Coupe - Spice Red|LS2 6sp|20k orig miles
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