A. Yes. With the exception of the chain drive versions of the XV920, all Virago engines have the same dimensions and engine mounts. Only the bore/stroke/and internals are different.
This does not apply to the smaller XV250, XV400 (Europe only), and XV535 engines.

Additional Information: The TCI units vary with each model and year, and so the wiring harness for the donor bike should be used as a replacement for the original as well.