Awhile back I talked about the Mini-Six RPG. I recently ordered the print copy of the rules, $8 bucks including shipping is an awesome deal!
Also I need to give a shout out to my bud David over at the The Library: Retro and Classic Fantasy Games
blog. He's been doing a ton of 70's Horror Comic conversions for the d6 system (based on the old Nightlife RPG). Check 'em out!