Budget lifting questions

I'm posting for a friend, so sorry if I have any details off, but here it goes.

According to JP Magazine, using V-8 Grand Cherokee coils up front, an XJ can get about 2" of lift over stock, and according to a guy on the internet, mixing and matching Dodge Dakota leaves in back can give him between 2 and 5" of lift.
3"ish is the desired amount of lift for him on this application. I told him it's possible to make UHMW plastic spacers for coils, I've done so on a Suzuki, but will this work for his Jeep?

He was also curious what else is needed for a 3" lift. I told him dropping the t-case should lower the d-shaft vibes, but he'll need new shocks. Anything else, and am I right?

Thank you, in advance.

BTW, I'm getting a Comanche this week! My first Jeep!

Mmkay, I found spacers for XJs, and understand how to make them, just need dimensions. Does anyone have these?

Bump

I'm just looking for the outer diameter of the coil, and the diameter of the post. Maybe a dial caliper will work for this?

Why not just go to the junkyard and pickup a few stock coil spacers? Stack them as needed...

For 3", I would go with the zj coils and stack two stock coils spacers on top of them. In the rear do the dakota/xj leaf pack without using the bottom overload spring.