They must be using the -1 designation for all of the HP 8082's, they list a -2 and -3 on their bleed chart but not the -1. If you are buying new, spend the extra for the Ultra 8082. It comes with billet metering blocks, all passages are threaded for changeable idle jets and emulsion, they also have external linkage which is easier to change secondary opening rate and has no internal linkage that can come apart. It will make it easier to calibrate for your engine. And if you qualify for the Jegs racer discount you will save about $100 on either the red or black version. And it looks pretty... :lol: