1.5" lift

[JoFotoz]

In a word...

Does anyone know if doing only a 1.5" lift will require doing the diff drop?

.....NO.

Plenty of 3 inch lifts out there with no diff drop.

The link Vette gave is invaluable for spring choice.

CV boots may tear right after lift as they are "used" to a different angle ...
...keep an eye on them , and as Mark says..lube 'em..keep them supple

jo