Can aluminum frame be re-spaced?

Brand new here so excuse if this has been asked before. I have an older 68cm Cannondale touring frame that I am pretty happy with but would like to upgrade wheels and other components. Current rear spacing is about 126mm and I would like to use the newer 9 or 10 speed components (130mm?) if possible.

Does anyone know if an aluminum framed bike can be changed? I've heard of steel frames being done but never one like this.

Thanks in advance.

Respacing an aluminum frame is probably not a good idea as a DIY project ... Cyclart can probably do the work (for a fee that will probably exceed the cost of a new frame of comparable or better quality).

Of course, you can upgrade ALL of the so-called "other" components with contemporary "stuff" ...

N.B. You can modify a 130mm Shimano rear hub to have only 126mm rear spacing by removing the 4mm spacer that is on the non-driveside of the hub ... you'll end up with a severe wheel dish ...

A 130mm Shimano can be modified to have a more normal dish after being reduced to 126mm if you don't remove the 4mm spacer, but you do replace the freehub body with one from an ACERA rear hub ... or, you could simply start with an ACERA rear hub and work from there!

With the ACERA freehub body which I think is rated as a 7-speed freehub, you won't be able to use the full complement of cogs in a cassette ... something like eight of a 9-speed cassette (but, maybe only seven) & presumably nine of a 10-speed cassette (but, perhaps only eight).