I went from /6 to 318. The problems I encountered were;
1; The single peice kickdown rod did not fit. The 3 peice kickdown parts are at Year One or equal resto house. The problem is there expensive. Though the soulution to the problem wasn't dirt cheap, the Lockar set up does work fine. It is alot cheaper than the OE rod and bell crank set up.
2; Your tranny, the 904 most likely is shorter than a 727. If you use the 727, you'll need to shorten the driveshat or get a new one. Places like; In example; Empire driveshaft or equal can do you a unit no problem. Just tell'em replacement shaft with what size U joint you have.
3; Your 318 motor mounts are slightly different on one side. You can use them over again by just adding washers to the extra space on the drivers side mount.
4; The Holley carb will need a small adapter bracket that sells for under $15. It moves the hook up point of the throttle cable over and back a tad. Also, the cable mounting bracket itself may not be high enough. I have noticed small differences between 2 and 4 bbl. brackets. You can get a custom made bracket @ Mancini racing, Magnum hp .com or other places.
OE parts are hard to find and can be expensive. You'll have to decide if you want the OE look or the aftermarket parts that have a bit of flash to them.
Below is a link to my Duster thread that may help you further. Throttle cable pictures at the bottom of page #4.
Any questions? Post them up and we'll be back.
http://www.forabodiesonly.com/mopar/showthread.php?t=10508&page=1&pp=20
