I used upgraded SMIC for a while and had good success with it, definate improvment, I built a car, the red one in my Avater and when the guy who bought it saw it and wanted it really bad so I took everthing off my car and put the stock stuff back on for a while, been a year now, and have a full intent to do a FMIC. I say if you have the money get a front mount, AC needs to be gutted but heck AC on these cars sucks so bad, it not worth having anyway. Just my .02 worth. God Bless