dey never know what dey sellin'
you have to ask to see the shock. then you decide if it's the excel g.
Actually for that Lancer there are no oil filled shocks.
The stock shocks are single cylinder gas shocks.
Rather similar to the excel g. if you ask for the KYB shocks for the '99 CK2 Lancer you will get these single cylinder, gas shocks the Excel-g.
The KYB shocks are supposedly superior than the stock ones, and some improvement in handling may be detected.
If you want to go above stock, then go for the Gas-A-Just Shock Absorbers (Gas Filled) High performance shock absorber with monotube high pressure gas construction, designed for high performance vehicles.
If you would like more information regarding KYB shock absorbers and applications there is an online catalogue at ]
http://www.kyb.co.jp/shock/index.html
The catalogue is at
http://www.kybpilot.com/kyb_pilot/asp/kybpilot.asp