Anyone using power steering pump filters on GM Saganaw style pumps?? If so any specific brand & is there any volume/pressure issues??? I've looked at several and they basically just look like inline gas filters - anyone every try using a basic Fram type inline gas filter??? Did it work or was it too restrictive???? I have a 71 Chevy K20 with a 350 in it and it seems to eat the basic parts house type rebuilds after a while. Still pumps but seems to have a hard time turning the tires 265-75-16's after awhile. I'm thinking that after awhile the pumps which are probably borderline to begin with get a bit gritty inside and a filter might help a little?????