I have an Otto front strut bar and a Progress rear sway bar...if i added the blehmco lower tie bar do you think i'd notice much of a difference if i'm not doing autocross of any kind..extent of my pushing the car is goin real fast around on or off ramps or occasional hard cornering down back roads

 

Definitely.
Here's irish44j's impressions of it once he got it on the car, and it sounds like you have a very similar suspension setup on the car:

http://forums.maxima.org/showthread.php?t=325407