I'm installing a roller-cam in my LA with with 1:6 adjustable rockers and I need a set of 5/16 pushrods 6.50" long with a cup on one end. I really don't want to have to go through the expense of a custom set if I can help it.
A place called OE Pushrods. Talk to Don. He is the manufacturer for most aftermarket shops. Ask nice and he will throw in a couple extra. You will save a lot of money.