First of all, the oil filter in an F-head is the bypass type and it only filters some of the oil. I'm not sure how much flow you are supposed to see. Also, there are some differant lenght bolts you are supposed to use for the federal mogul pump. Second, a better resource for F-heads is WillysTech
There is also good stuff at The CJ3b page
I hope this helps...
1955 Willys CJ5 Buick 225 V6 160HP 270ft-lbs, T90 trans, Warn OD, PTO winch, Spicer 18 T Case, RS9000's, Dana 25F/ 44R,
5.38:1 gears, 11" brakes, Bestop Supertop, Hurculiner