Front end Spacers, need some help

i just got some new tires and wheels for my 05 tacoma prerunner and im looking to put suspension spacers in the front only to lift it up a little.

I'm not sure what size to get though (2.5" or 3") because im told sometimes the spacers add more height than they say, sometimes even double.

its a 6-lug.. i know that affects it in some way.
im looking to lift the front atleast 3"... and at most 5"...
if anyone knows whats best please get back to me.

 

Also, if you want to go above 3", don't skimp - commit to it - go all the way. I hear Fabtech has a great "up-to-6-inch" lift kit.

 

haha i dont know much, but whats a UCA and why would i need new ones? and also the back end is 3.5" higher than the front because i took it into the dealership when they offered a free TRD shock upgrade but it was for the back only, and it raised it.. too much. thats why i need to lift the front, so it doesnt look so goofy.. and i dont mind having the front a little higher than the back if it does happen.. i was just wondering if 3" spacers for the front suspension would raise a 6-lug prerunner 3" or something more like 5"-6". if thats the case ill get the 2.5" spacers and hope for the 4"-5"

 

upper control arm

 

alright cool, thanks.. i just was worried because on a previous thread i posted someone told me they put a 1.25" spacer set in the front and it lifted the front end 2.5"... just makes me wonder.