Does any have the part numbers for the little bubba and the big bubba?

3190W and 3191W are little bubbas, 3195 and 3196 are the big bubbas.

3190W is the stiff sidewall for door cars and 3191W is for a dragster. At least that's what the MT rep told me.

From what I understand the 3190 and 3191 are the same except for compound. I could be wrong though. The 3190 works excellently on my dragster.

I agree with Stephen as we have a set of 3190 on my sons dragster...excellent results 4.70's

Have the 3195 on my car but going to try the 3196 next...

The difference in the little bubbas is compound only. One is X5 the other is x8. Big bubbas 3195 is X5 3196 is a harder compound L5

Also the 5a d 6 digit in serial number is compound of a MT