heads and intake manifold set up for 318. j heads available.

I had a 318 in my Duster for a while, it was running high 13s at almost 100 MPH. That was a tired 318, to boot. There's a lot of power to be had with the small blocks.

For the street - you should probably skip the 360 heads. The bigger valves & port sizes may hurt your low end, which is really what you want for driving on the street. You should look for a set of "swirl-port" 318 heads - 302 castings, I think - a decent dual-plane intake (like the LD48 or Performer - not the Performer RPM, that has 340/360 sized ports), a 600 or 650 cfm vacuum secondary carb and a mid-sized cam.

Check out this page from Edelbrock's web site:

http://www.edelbrock.com/automotive/man_chrysler.html

They have a whole "power package" that includes intake, carb, cam, lifters, springs, retainers and timing chain. Not terribly expensive, and well balanced for a street 318.

Or, you could get yourself a set of Magnum heads & a Magnum intake and go that route. I think they have to be modified to fit the LA block, though, I can't remember. But the Magnum heads signifigantly out-flow the earlier heads, even the 302 heads.