KUALA LUMPUR, April 10 (Reuters) - Malaysia will sign a $368 millioncontract to buy battle tanks from Poland on Friday, a government officialtold Reuters on Thursday.The contract is for the supply of 48 battle tanks from Poland's ForeignTrade Enterprise Bumar Ltd.In March 2002, Malaysia agreed in principle to buy Polish PT-91 battletanks, a modified version of Russia's T-72. The PT-91, weighing 45 tonnes,has a 60 km per hour top speed and state-of-the-art firepower with day andnight vision.A source close to the deal said 30 percent of the price will covered bya counter-trade involving the sale of Malaysian palm oil.Malaysia Mining Corp Bhd (MMC), the flagship listed company ofbusinessman Syed Mokhtar Albukhary, will also sign a contract on Friday tomaintain the battle tanks for 15 to 20 years, according to a statementfrom the company.MMC has interests in Malaysia's largest independent power producerMalakoff Bhd and a fast-growing transhipment facility Port of TanjungPelepas.