I recently got EASE scantool package. Consisting of The Sofware Cd for GM powertrain OBD-I, OBD-II cable and converter box, and it works schweeeeet. it was 300$+ dollars tho. If you want the Body/Chassis also it cost about another 300.
I have to say it is very cool and easy to use.
Features include: vehicle selection database, real-time data grid, real-time graphing with up to 6 graphing windows, meters, bar graphs, unlimited recording and playback, snapshots, professional reports, on-line information libraries view and clear DTCs and more ... All PowerTrain options that the OBD-1 computer in my car has, the software supports. I can view and record 64 diffrent paramaters at a time.
I'm going to have a couple screenshots by the weekend for data needed to have a custom chip burned. I'll post them when i get a chance so everyone can see what it looks like.
thier website is here: