after trying to find out some options on replacement parts for our van, fezzik, finally dug out the RPO sheet and resolved the options out. well, at least all the ones i could find options for.
AD8 - right side door option? au3 - electric door locks a01 - tinted windows a18 - swing out window, driver a19 - swing out window, passanger a31 - power side windows? a57 - passanger seat cd4 - pulse wipers c5s - 6600 GVW c60 - manual HVAC system d2d - gear driven speedo? d20 - sun shade, pass? d45 - mirror, stainless e24 - wwr side, cargo, hinged? e5z - speedo adapter delete e6d - more speedo options? e9z - speedo key delete f59 - stock stabilizer bar gq1 - axel, std ratio gu4 - 3.08 ratio rear g50 - heavy duty spring, rear jb5 - brakes, power dic, 6400lb k19 - air injection reactor (cat) system k34 - electronic cruise control k60 - 100 amp alt lod - ??? lo3 - 305 engine mx1 - trans provisions m40 - 3L80? missing m50 for trans cooler? aftermarket? na5 - tier 0 emissions nl7 - 33 gallon fuel tank n31 - custom steering wheel (oh yeah) n33 - tilt steering n40 - power steering n67 - wheels? slm - sales processing tt5 - ??? ua1 - heavy duty battery um6 - stereo head unit up8 - stereo options u37 - front and rear bumpers u66 - 4 speakers v22 - chrome grill radiator v37 - chrome bumper v73 - fixed antenna xeu - wheels? yd5 - stock front springs ye7 - special performance package yl8 - ??? zeu - ??? zq2 - driver convience package zw9 - base body / chassis zy1 - solid color paint z53 - instrument cluster, oil press, coolant temo, voltage 12u - primary color, silver metallic 8e2 - front seat delete (conversion) 82i - interior trim, medium dark grey 82w - interior trim, vinyl, medium dark grey