Ok so here is the issue i am having i had a cable driven speedo and idiot light cluster and i just swaped in a electric speedo full cluster i have a hall effect adapter for the speedo however i do not have the buffer box under the dash as i was under the impression that with a hall effect i would not need one now i have the wires run and at 55 it pegs my 120 mph speedo is there a way to work around this cheap in northern colorado and junklyard parts are hard to come by was shocked it found the cluster i came from a 90 with a 305 my 86 is a 2.8 help with any solutions that you may have