Which Camaro shifter is correct?

[SS427]

I am restoring a 68 big block Camaro and am not positive which shifter it should use. I have added a few photos of two shifters I have available but am not sure which if either is correct. This again is a 68 big block, Muncie, non-console Camaro. Would someone please let me know which shifter if either and also if the mounting plate is correct? Photos are a plus if you have them. Also, what are the lever and rod numbers for the same as I will need these if anyone has them? One of the shifters I have has a 3 1/2" offset while the other is about an 1 1/2" offset. I have been told both of these are 68 Camaro but I am not sure. The larger offset also has a "T" stamped on the handle about 1/3 the way up. I don't recall seeing that before. Thanks in advance.
Rick