Ran into a problem today with my LS swap in my 78 Vette. The bracket part 20-135 and a stock corvette 97 PS pump, when mounted to the cylinder head the power steering pulley hits my A arm. Tried to locate a different pulley today without much success. I need about 1" smaller diameter with the same offset so the belt lines up. I read a warning in the instructions that this could be problem, but no help in identifying a cross reference pulley.