Need some help

[UrbanBurban91]

Ok- I have a 91 GMC burban I got on trade- (got the better deal with this- traded a 85 s-10 blazer with major body issues & motor/tranny failing title for title) that I was told has 4" drop springs (although something tells me they're cut) with (as I was told a 3/4 ton rear- ?5 lug conversion?) with a, as I call it backyard flip kit- basically they just flipped what was under it & put air shocks on back (ouch) with gas charged under front- it's sitting about 1/2" to 1" off bump stops.
(budget)
So it comes down to this, do they make a kit to fix the pitch of the rear yoke or what is involved?
Next- how to get the ride a bit smoother....any ideas?
also, what SHOULD have been put under the front? I mean, the tires aren't bowing really but I would imagine it's only a matter of time.

In addition, who/where is cheap/decent for AC parts? This one had a backyard conversion (r12 to r134a) so now I need a new components.

I want to take the front down about another inch or so- would like bags but not sure what route and what is affordable.