5100 with small top plate spacer?

it is possible to put this spacer this spacer http://toyteclifts.3dcartstores.com/Front-Top-Plate-Spacer-Kit_p_333.html between my frame and my coil spring with billy 5100 set a 2.5. I will like my truck to have 3 inch lift or is better this spacer?
http://toyteclifts.3dcartstores.com/Front-Top-Plate-Spacer-One--14_p_351.html#

 

Save the money, buy lift coils, and adjust the shocks back down to Zero, you and your truck will be so much more happy

 

The spacer is beacause here in quebec, canada if buy with toyotec spacer cost is 280$ with front top shock bushing kit and new coil is 700$ the shipping is very high and $can is very low too. It is have a big différence to price for 1/2" lift. In local partshop store the same kit are 30% more expensive than toyotec with shipping and $ us to $can include.

 

If you decide to go the spacer route, and want an additional 1/2", get the 1/4" top plate spacer. The one you linked will lift 3/4". It will be a very rough ride though.

 

with 1/4 spacer my truck are mosty stiffer or acceptable compare to juste 5100 @2.5"