Stock Y pipe?

[884x4310ci]

Hey guys. I am starting to gather up stuff to make a exhaust system for my 94. And was wondering if the stock Y pipe is a 2.25 or 2.50 ?
94 k1500 5.7L
Thanks

 

[PlayingWithTBI]

My 88 was 2-1/4. I put on shorty headers (w/AIR) and this JBA mandrel bent Y pipe. It all lined up and bolted together well.

https://www.summitracing.com/parts/sum-g9015

https://www.summitracing.com/parts/jba-2831sy