Transmission Question
 

Hey Everyone,
I got a 89 GMC 350 tbi 4x4.

The past few times ive taken it out ive had to put 1.5 qrts in it everytime. Now its fine. So im thinkin the rear main seal is gone, that its letting the tranny fluid go in the TC and finally leveled both out.

So i ordered seals for it, and heres my question.
The front seal is about maybe 2" from one side to the other. The one for the back they gave me is prob 5" easy across from one side to another.

Shouldn't Both seals be about the same size???????

Thanx