I told you guys to expect more questions... eek

I'm totally ignorant of the mechanical stuff even though I grew up on a farm...should have never picked up that guitar when I was 14....

I'm retrofitting a 55' block into my 59 truck. The fuel pump on the 55' block only has an in and an out. My 59' had 2 additional (vacuum?) lines. I read through the manual but am still confused. Do I need these other two lines? Does this have anything to do with the windshield wipers?