I've been told you can use the older AMC 6 crank to stroke the 4 Liter I6 (Jeep) into a real monster, so, that would at least suggest the cylinder spacing should be the same (as the AMC 6's). Don't know how that relates to the Mopar 6, but I thought that might be something you had access to (that and it's supposed to be a decent flowing head stock).
Last edited by Nexxussian; 11/20/08 05:52 AM. Reason: lord help me I can't type