Lts With Cats and X?
I'm actually doing a similar thing here in about 2 weeks with a Y pipe.
I'm running Random Technology 7000 Series bullet race cats off the header collectors (maybe cutting the dr. side collector back an inch to accomodate the cat). Then reducing it to 2.5" pipe mandrel bend cuts welded together into a flowmaster 2.5-3" merge collector. Then a hooker catback. I'll let you know how the cats fitting goes and so on. But i'm confident it will all work.

