[napayshni]

That would be a 200cid six cylinder. The six cylinder models have the 4 lug rims where the v8's had the 5 lug rims

 

[eifion]

T stands for trash....


T code==
1979 Mustang
3.3L 1V 6-cyl 85 hp T Code

There are many T's in the code for Mustang

Go to the site below and find what you need
http://www.vintage-mustang.com/topics/decode/decode.html