You could search car-parts.com for a set of 88-89 1.3 Carb Kick gears.. they are 5.62...
That's what I have coming.. I paid through the nose... but I have my stock 5.12's to sell with a locker to offset the price...
The 5.62's will bring a 31" tired vehicle VERY close to stock gearing.. my 31's are about 30.5 actual height.. so 5.66 would be perfect to return to stock gearing...5.62 is pretty darned close... and that is for a standard.. since the auto has taller gearing, even the 5.12's will help, and they are ALL OVER the wrecking yards.. 5.62's would get a nice reduction for an auto with 31's...