question on strut brace/sway bars

What're the performance differences between getting front/rear strut bars and front/rear sway bars? Are there any differences between if they are in the front or rear?
What would you suggest me getting? Is there anything bad if I get all of them(front/rear strut bar and front/rear sway bars)?

Also, if I get an ecu upgrade, would that change the MPG of the car?

Thanks for your time.

this should really be in the technical section.

strut and sway bars do different things.

strut tower braces are used on unibody cars to "close the loop" and make the car more rigid with less flex.

more info on said topic through link below...

http://www.automotiveforums.com/vbulletin/t96789.html

check it out, it's the exact same topic!!!

http://www.automotiveforums.com/vbulletin/t2008.html

thread on sway bars.