Hi guys im looking for a Oil intercooler pump

i have the oil intercooler so i just need the pump now! or is there any way i can get this to work with out it.
Im all so looking for a Blow off Valve,

i just dont know what one to get? im looking at the Greddy Type S-Bov, but then the HKS one is good as well?
all so what size Intercooler would work best with the Turbo, i was going to get one that is 28" X 12" X 3"
any help would be nice thanks guys