why go for questionable solutions when you can buy aftermarket springs for the sporty straight off the shelf? i can undestand the rear TJ conversion-makes sense and fits well-but why mess with the front springs-which are hard to install and have a severe effect on steering, when you can simply buy an aftermarket spring set which is made by a known company and was probably lab tested and has a quality certificate.
king springs, lovells, eibach, dobinson- they all make front lift springs for the sporty. i have a set of 2 inch lovells lift springs up front and they are great. soon i will be going for bigger lift - and i will be installing a set of 3 inch DOBINSON springs + longer front forks fron TRACKFINGER- that will give me serious lift at the front without compromising the driveshafts.