If you want to run a 4bbl, I would like to suggest a Weiand Stealth 8022 dual plane manifold. It has 318 sized runners, and ports. Appears to pick up where the old vintage edelbrock LD4B left off. These are new castings. It doesnt have a cast in provision for a coil mount, however you can probably use a 340 six pack coil mount bracket that bolts down to the intake mounting bolts. Dual exhaust , and try to hunt down a set of 68-70 vintage 340 exhaust manifolds. You can pick up repops of these if you cant find a good used set. Of course the usual internal stuff along with a mild cam, and an electronic ignition upgrade. A nice addition is an automatic timing chain tensioner from a 1990s dodge 3.9L V6. Front is the same as a 318. For some reason dodge didnt put these on the V8. Check rock auto. Use a 1992 dakota 3.9L to search. You can get one for about $30. Hope this helps.
