MSD DynaForce 120 Amp, 160 Amp, and Race Alternators are designed for extreme output at higher RPM while balancing current output to keep electronic components up to speed during idle and lower RPM. The one-wire charge post is to the side of the alternator housing for improved clearance and a pulley baffle ensures no fan-to-belt issues. GM platform housings with straight mounts fit many GM bracket systems from the mid-1960's to the mid 1980's and are available in your choice of chrome, or black finish.