Before I make a mistake please help new mopar fan!!

The Max Wedge 413's had the cross rams. I believe there were 413 4 barrels also in those early years.

As some have pointed out, a big block of any kind can get pretty expensive, not handle as well and be more difficult to hook up on the street than a small block. Changing spark plugs will probably be a big pain also. 360's, Magnum or original, can be made to perform very well. They actually have a longer stroke than a 361/383/400 and make good, street friendly torque. 3.58" for the 360 and 3.375" for the low deck big blocks. Lots of build options that can be bought for less money and hassle.