I am driving Auto now but i feel the real power hasn't come out so... kind of wanna change to Maunal so can anyone tell me how much will that cost for me ... thanx

I can't believe you missed the thread that's like 7 below yours. This topic seems to come up every 3 days or so. HERE:

http://www.automotiveforums.com/vbulletin/t32878.html