maybe SLP.

 

They look like some generic cheap resonators

 

+1

 

Yeah those are not SLP or even Pypes because that's not stainless. Brand X resonators.

 

Do they have any markings on them? My old truck had generic looking mufflers and I googled the numbers. Turns out they were patent stamps for flowmaster. Easy enough and worth a shot if they have any markings.

 

Those are just generic glasspacks