Will my PSU fit

From every picture I've seen it does actually look like a standard atx psu is there (albeit a short one)

Open the case , measure the PSU itself .

Post the measurements here.

If it will take an atx PSU then the vs is not the unit is buy honestly , its a new model so nor entirely sure of its quality but if its anything like the older vs series it won't be very good
 
Not very specific mate but sounds atx size/spec to me

Would have preferred all 3 measurements in mm/cm

What's measurement internally from front to back of PSU ??

As long as you have 140mm clear to play with there are loads of Psu's you could use.
 
^ take the side of the case off so you can see the psu.

Measure its length from where It touches the back of the PC case to the opposite end where all the cables come out of it.

In cm call that length

Measure its height from top to bottom

In cm call that height

Measure its width from one side of the case to the other in cm

In cm call that width

On the back of the case the psu should be fixed with 4 screws , measure the distance between the centre of the top 2 screw's in cm.

Measure the distance between the top left screw & the bottom left screw in cm.

Post all 5 of those measurements back here.