Recommendation for prototype CM (BGA reflow, mainly)

I am considering building a very small custom PowerPC-based (MPC8241)
SBC for something. I need a recommendation for a proto house that can,
at a reasonable price, reflow these BGA parts onto a PCB for me. I
don't want anything else stuffed, just this one part, since I need to
bring up the rest of the board piece by piece. I'd probably only want
three boards made this way. I don't plan to have a custom stencil made
for the first run PCB so it would need to be done with one of those
one-time disposable BGA stencils.

There would be a possibility of very limited production (<1k pieces)
but I'm more interested in the protos.

Any names people can point me to? I can find a million places in google
but have no way of judging them.

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