Magnum timing chain with LA timing cover, and fuel pump eccentric

we are building a new engine for Jasons @Prorac2 63 valiant.

The block is a 1994 magnum 360. With LA cylinder head oiling provisions.

We are using the factory crank and rods and a set of weisco pistons.

For heads we are running edelbrock performer rpm aluminum heads.

Obviously we’re running a roller cam. We’re retaining the mechanical fuel pump for simplicity, along with the LA accessory drive.

Here’s the question.

We are looking for a good billet double roller adjustable timing chain. I’m reading that the LA and magnum use different timing chains.

Would like an adjustable timing set for degree in the cam.

But all I can find are non adjustable cheapies.

What’s everyone running on their magnums.

Thanks. Eric and Jason.