Unless you just want billet you dont really need them. The way the lca is stressed is in tension. Wheelhop issues come from the soft bushings not flex in the arm. As a matter of fact the biggest problem is the big soft bushing you can see through (It actually has slots to make it softer) in the UCA. You can eliminate all the wheel hop issues in most cases just by replacing the UCA bushings with poly. Take a look at a Roush Antihop Kit sometime.
The squat issue is an instant center issue. The only way they will improve launch is if they change the geometry. You have to get a UCA that has provisions for that such as the Steeda Competion UCA which has two different bolt locations for the arm. You usually have to clearance the tank a little to use the one you want. On the LCA you will likely have to change them since you usually cant use stock arms with relocation brackets (which is what you really need). The relocation brackets that do accept stock arms (that Ive seen) only allow you to use the lowest bolt hole. Ideally you want to weld in the relocation brackets and use the one that allows you to do the most tuning. Steeda is the best Ive seen for this.
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