Any mechanic shop should be able to do it. It's just replacing parts followed by an alignment, which should always be done any time suspension parts are replaced on a vehicle and the shop should know this. I understand a lot of places may not wanna deal with anything because they're "lowering/customizing" parts. But, maybe just tell them you want your spindles and rear coils replaced with the parts you provide. I say spindles because on a 2" front drop, that's the best way. You could do coils or lower control arms (if they have arms in 2" drop), but they're not as ideal as spindles for just 2". You would need shorter shocks or shock relocators for the rear to accompany those 3" coils.