Hi,

I own a nissan altima 97 with sr20de engine. I would like to know what other engine types can be used to replace my sr20de engine on the altima (taking into consideration future compatibility with gas with ethanol/etc and fuel efficiency/tipid)? I live in taytay rizal and there are only a handful of good autoshops here and most are really having hard times when i have problems regarding my engine (specifically rpm and idle). most suggests replacing the engine which i personally dislike but i would only like to have my options open and know what engines out there can be used for a nissan altima 97 model and its price (bnew and/or surplus)?

Regards,
Haruto