opening a Happ controls power supply question

I have been feeling the burning desire to build a new supergun. and I went through my box of spare arcade parts and I almost have everything I need.
The power supply I have is HUGE! its a happ controls psu made for standups.

My question : is there any problem with opening up the casing and gutting it to make it smaller?

There is alot of room inside the casing itself is quite bulky if i removed the casing and put the loose parts inside a supergun I could work with a much smaller casing.

I am sure there are some overheating issues I have to be careful of the psu comes with a fan I can still use that.

any suggestions?

I don't think there would be a problem...I always felt that the fan was a bonus since standard jamma power supplies have no fan.Though I'd only use these in my US MVS cabs....I'd still try to utilize the fan if you could..
I wonder if the outer shell works as a ground in any way..It might connect points on the power supply pcb to each other..

I've tried to wire one of these power supplies into my Candy cab once..Wiring it the same way that the standard power supply was and I could not get it to work right..I got a lot of hum out of the speakers..
Something about the power supply wasn't right.....It was either the fan causing the hum or something in the list below..(maybe--Low ripple and noise, EMI filter)


+5V 15A, +12V 5.5A, -5V 1A
UL and CSA recognized
External On/Off cable with 4-pin Molex
Dual AC input 115vac/230vac, selectable by switch
Low ripple and noise, EMI filter
Overload and short circuit protection
Built in DC fan and power switch
Metal case - XT size
Dimensions 8.74"L x 5.51"W x 4.65"H
Supplied with 8' long SJT power cord
Meets AMOA standard
1 year warranty
http://www.happcontrols.com/powersupplies/80007200.htm

It makes me chuckle when I see a supergun with a PSU inside that is still in its case. It's like wearing two coats... it's dumb and increases the possibility of overheating. The supergun case replaces the PSU case, if it's metal you just ground it (earth ground, not logic ground) and if it's plastic, well you don't...