The question is: does the 241C need the oil pump? I understand the 208 is the same as 241 but w/o the pump, is this true? I was trying to get the speedo working in my truck by swapping the speedo tailhousing/bearing retainer from a pass 241 onto a reluctor tailhousing driver 241 but the oil pump is keyed differently and would not allow the tailhousing to seat. Without the pump the tailhousing will go on my TC by slightly enlarging the bolt holes. GM may have made a speedo bearing retainer for the later model driver drop 241C but I don't have one, any ideas?