1998 k1500 5.0l exhaust swap

[trx125]

I have the opportunity to get a complete new exhaust from a 04 5.3l with cats and magnaflow muffler. The question I have is will the pipes bolt up to the 5.0l manifolds. I plan on plugging one of the o2 holes and moving the other one further down line right after the y. Will this even work at all? I need to replace the exhaust it is killing me, the previous owner cut off the pipes right behind the 02 sensor and jerry rigged the rest with dual straight exhaust and cherry bombs. Thanks for any help.

 

[df2x4]

Will this even work at all?

I seriously doubt it. GMT400 vs GMT800 exhaust routing is pretty different, at least to my eyes.

 

[trx125]

I guess I'll find out soon enough the guy is giving it to me, maybe I can make it work without too many major modifications.
I'll keep it updated. Thanks.