dude, im sure if u actually take the effort to look around, u shud find some. i think there are some that cost below RM 150?
do u have like a budget?

if im not wrong, ianho will ask u to use PVC glue, coz thats the reply i got from him last time
if not i think u are looking at chlorofoam [very hard to get.]

i think its something like the AC ryan mod??

depends on what shop.
some electrical shops are open while the acrylic shop there isnt.
hope that answers question.

i got mine from lowyat
try asking the shops. they give u the spares