I have a Fabtech 6in Performance lift with the factory springs in the front and
blocks in the back. I would lik eto raise the back up another two inches to make it level with the front. What are my options and how much will it cost?

 

Your options are a larger lift block, an add-a-leaf or a complete set of new spring packs.

 

which is the cheapest and will any of those effect my drive shaft?

 

5" lift blocks. None of these options would involve your driveshaft, just the body height.

 

I used a pro-comp add-a-leaf for my truck because it sat just like yours does, now it sits level and I think the AAL is a better option than a bigger block. just my .02

 

i got a pro comp AAL lifted my rear 2" and it cost around 115 from 4wheelparts but the install might cost a little if you dont do it yourself

 

im throwing in a pro comp 6" lift this weekend and im adding a leaf to level it out.....under 100 bucks on ebay. the u bolts that come with the kit are long enough. its either that or get bigger rear blocks.

 

Do all Fabtech 6" lifts result in the rear being lower than the front, or does this pertain to certain model years?

 

No. It doesn't happen to all of them. These trucks come with different configurations from the factory. My truck still has a slight rake to it.