Close... Injection pump, lol
And one of the mufflers is actually a resonator, unless someone replaced it with a second muffler?
Anywho, not sure what you're saying about the manifold. Is it welded, but cracked again, and doesn't leak? Or it was cracked and you just welded it? If it is cracked, the crack isn't gonna get any smaller just bigger. And a leaky manifold doesn't do a very good job spoolin' up the turbo.
It's not a big deal to replace right away, but once the funds allow, I'd definitely get on that before it cracks big time. A 3-piece manifold (instead of the stocker) might be a good replacement.