Im running JBA shorties and like them some like long tube headers (pacesetters I think?) and a nice exhaust system behind that, as for fans Im running summits single fan though Im looking at running a dual fan and going to a 2 row rad. As for rebuilt heads I would go after market unless they have upgraded the valves and maybe some porting. Hughes, eldelbrock have a few and I found these on ebay http://www.ebay.com/itm/NEW-DODGE-EQ...sories&vxp=mtr
I have found a few guys running them and love them. Also I would look into a SCT tune to take advantage of these mods and wake up even a stock set up.