Can i use my 93.5+ remote with my 93 alarm at all?

i bought the remote sensor for the infiniti g20 but i have a 93 and apparently the remotes only work with 93.5 and up..the guy who i talked to at remotesunlimited.com said i should just get an aftermarket alarm but i was wondering if i could just get some relay or sensor or something thru infiniti or do i have to get an aftermarket one?? i have teh infiniti with the leather package if that helps at all.
thanx
gusman
ctrainor99@hotmail.com

Have you tried the dealer? They should have the remotes, however, they're expensive. I didn't know that P10s prior to 93.5 had a security system stock.