Some involve using the larger sized oil filter adapter, and smoothing it out. Next, the passage from this mount into the engine is way undersized. Use increasingly larger drill bits until it is opened up to 7/16". Open up the passage where the oil pump attaches. It is too small as well... and will opened up to the pump outlet size. Check the alignment between the main bearing holes and the holes in the block. They are often way off, and will need adjusted by grinding either the block or bearing. The rockers on FE's also have a tendency of getting over-oiled. Yes, oil is at a premium in FE's, and we don't need excessive amounts of it getting routed to the rockers instead of the crank. These passages in the heads can be restricted. Many people use a #90 Holley jet in the head. Some drag racers with full roller setups go smaller.

As for rockers, Erson makes a nice roller setup, complete with endstands for around $600. It's the best deal going.

You can get any FE question under the sun answered at the following forum. There are TONS of diehard Fe fe-natics here. There's also a search function for the posts.

http://network54.com/Forum/74182

Good Luck!