...and the outlet size for the line fitting going to the rear brakes is 1/2-20 instead of 9/16-18. The line fitting going to the front brakes is the same 1/2-20.
SUMMARY
Normal, left hand drive S-10: Both outlets on the engine side and both outlet sizes are 1/2-20 inverted flare.
Right hand drive S-10: Both outlets are the driver fender side and are the standard 1/2-20 IF fitting for the front brakes and the standard GM 9/18-18 IF fitting for the rear brakes. So no modifications to your brake lines or brake line fittings. Direct bolt on.