toy 4.88?

[JToyota2]

I have found a 85 Toyota I am considering trading for to build myself a DD/mild offroad/hunting truck. Its 22R 5 speed 4x4 single cab. I have decent knowledge on these trucks but have seen that there are a few guys here that know much more than I do. The question is about stock gearing. From my past experience a white mark on the pinion nut is supposed to mean 4.88 gears. But I have never seen a STOCK 4 cyl. With 4.88s only newer IFS V6 trucks. I have googled it and again only see info on V6 IFS trucks and about them having a different type of carrier. The mark looks white to me. Is this common? Is it aftermarket gears? Is it V6 thirds swapped in? Or am I completely off all together?
Also I would like to hear opinions on this odd ball 4.88 deal? Good/Bad?

 

[TBItoy]

The differential carrier is just a standard 4 pin carrier.

The actual 3rd member casting and gears are different. Instead of using a different offset carrier or thick gears they cast a new 3rd.

Does it have 4cyl or v6 3rds?

 

[JToyota2]

It looks just like other 4cyl. 3rds I have.

 

[TBItoy]

It looks just like other 4cyl. 3rds I have.

Then it's not a factory 488

 

[JToyota2]

OK thanks the guy said the gears have never been changed but he doesn't seem to know much about the history of the truck. I guess its better that they're aftermarket so if I ever wanted to change gears I wouldn't have to get different 3rds. Thanks again.