I'm working on a 1990 258 and trying to mount a V-belt set up to it from a 1979 CJ. (The 4.2 serp belt set up was missing pieces and I had most of the Vbelt set up). I ordered a harmonic balancer, and it came with a SINGLE belt groove. I see additional crank pulleys littering ebay. Am I right in thinking these bolt to the front of the single groove balancer (As P/S was an option and that's why you need the second belt)? Or am I just going about this ass backwards. I'm really at my wits end with this entire belt debacle...