Two inch pucks will be plenty for your 31's to get flexy, 3.5" spring system
for 32/33's.

Carl

Real Jeeps don't use flares, they radius their fender wells:
http://www.billhughes.com/pismo.htm
       God Bless America, Bill O|||||||O
mailto:LWHughes3rd@aol.com

On my CJ7, 3" was tons to fit 33's without tagging.  A YJ would be
tighter because it starts off lower.

You can get several type of lifts for it.  The most unstable and unsafe
one is a shackle lift.  This does bad things to the geometry usually and
needs much mucking around with shims and such to get right.  It also
stretches the springs flat quickly.  The best is a spring pack replacement.

In between these are a simple re-arch of the springs and a re-arch with
a 'keeper' leaf in them.  The Keeper is a larger (thicker) spring
already tempered into the proper arch for 'say' a 2.5" lift.

I blew out my rear spring packs so needed new ones.  I went to a 'truck'
spring shop that does dump trucks and semi tractors because they don't
sell gold plated springs or use platinum wrenches so they have realistic
prices.  4x4 shops are bad rip offs that way.

They got new factory rear spring packs, took them apart and re-arched
them for 2.5" lift, then put a keeper spring as a replacement for the
first free leaf down.  The then took off my stock front spring packs,
took them apart, arched them and put a keeper in there too.  This 'all'
ran me under $500.00 installed and I had to buy my own new shocks to fit.

My 'glass body mounts about 1" higher than a steel one, so I have a bit
of 'body lift' on it.  You 'can' put lifted body mounts in, but
depending on the rust level of the Jeep, this can be really expensive to
impossible without serious reconstruction.  The body bolts have hidden
'nutserts' or weld nuts inside rails that spin out which makes for big
trouble.

Mike

Consider a 1" body lift to resolve your rubbing issues with the 31s. My
brother has a YJ with 31s and a 1" body lift, and he has no rubbing problems
at all.

To run 32s, you will want at least 2" of suspension lift and heavy duty
shackles, and probably 1" of body lift. Get the body lift today, and save up
for the new springs. DO NOT get ProComp springs when you are ready for the
new suspension.

I have a CJ with 2.5 inches of spring lift and 1" of body lift. I run 32s
and I only rub on extreme stuff, but I rub inside the fenders, not on the
flares.