Here a recent report from Janes abt MY arty program:
The Malaysian army is expected to buy more 155mm artillery
systems as part of a major modernization programme.
The army has taken delivery of 28 South African Denel 155mm/45-cal
G5 Mk 3 towed artillery systems plus ammunition, including
projectiles, charges and fuzes.
These are used in conjunction with an African Defence Systems
AS2000 computerised fire-control system. The prime movers for the
G5s are German MAN 6x6 cross-country trucks that have been modified
by local company DEFTECH for their specialist role.
The service has yet to decide whether to buy more towed weapons
and/or self-propelled howitzers (SPHs). Until the G5s were
delivered, the largest-calibre artillery systems in Malaysian
service were 12 155mm FH-70s supplied in the early 1980s by RO
Defence. BAE Systems, RO Defence, has had an agreement for some
years with Malaysisn Naval Dockyard for the local assembly and
eventual production of the 105mm L119 Light Gun. However, industry
sources said that this project is not likely to proceed in the
short term as the army focuses on 155mm artillery.
Denel could supply additional 65 Mk 3s or the more recent
155mm/52-cal system. The company is still marketing the 155mm G6
SPH but with a combat weight of 47 tonnes, this may be too heavy
for the army's retirement.
A possible alternative is the more recent Denel T5, which mates the
upper part of the standard G5/45-cal ordnance with an 8 * 8
cross-country chassis. Using a 155mm Base-bleed projectile, a
maximum range of 39km can be achieved, which increases to 54km with
the recently introduced Velocity-enhanced Long-range Artillery
Projectile (V-LAP). The first T5 system was installed on a Tatra
8x8 chassis. It could, however, be fitted to a variety of other
cross-country plat-forms, according to Denel. For trials purposes,
the chassis has been fitted with the upper part of the latest G5
155mm/52. This is called the T5-52 and a total of 22 projectiles
and charges are carried.
During the Defence Services Asia 2004 exhibition in Kuala Lumpur in
April, South Korea's Samsung Techwin displayed its 155mm/52-cal K9
Thunder SPH. The K9 Thunder is staying in Malaysia for trials and
demonstration purposes before returning to Korea.
It is understood that more than 100 K9s have been built for the
Republic of Korea Army and for Turkey. Turkish weapons, given the
local name of Firtina are assembled at facilities of the Turkish
Land Forces Command. The weapon has also been tested in
Spain.
Malaysia has taken delivery of three batches of Brazilian ASTROSII
multiple rocket systems and a regiment is now fully operational
with three batteries, each with six ASTROS II launchers (JDW 16
January 2002). The army has also received a quantity of Avibras AV
- VBL (Viaturas Blindadas Leves) 4 x4 light armoured vehicles.
These are to be used in specialised roles within the ASTROS II
regiment.
Source:- Janes Defence Weekly 26th May 2004.
Christopher F Foss JDW Land Forces Editor, London
From this report as of May 2004, MY has only three batteries of
six ASTROS II launchers, i.e. 18 ASTROS II launchers .
So I really do not know how this fella could come with 36 &
another 18 coming soon!!!
Perhaps from the June issue of Perajurit, pg 37. It stated that "
Official defence information tells an additional of 18 units
Astross II to make it 36 is still 'in process' with big possibility
to materialize on the year 2005"
( Not official, only a rumour, but it stated that MY has only 18 A2
at the moment)
So from Janes & Perajurit, MY has only 18 A2 at this moment,
now it has been inflated to 36 & 18 more coming!!!! 
How rumour spread & get twisted in MY!!! 