Max lift/stock slugs

I would try this.

http://www.summitracing.com/parts/crt-p74143/overview/

I bet that will give you all the fuel you will need. I would regulate it, but then, "I" would regulate any electric pump, just so I would KNOW how much pressure I have, know what I mean?

Sorry I don't know any more specifics about your valve clearance question. I saw no one had answered and thought I would at least try to help.