Helping a young one starting out. Street driven 73 d100,3.73 sure grip,727 shift kit ,etc,has a fresh 74 360 with performer intake and small tube hedders and later heads( swirl port?) Trying to get in the 13s but very streetable on pump gas.Truck weights 3600 with driver,what converter ,cam would be optimun,,something with good low end torque but probably wont see much past 5000 rpm.