Piece of advice from a 69 Valiant big block automatic and 74 Scamp (modified) A/C small block 4 speed OD owner DO NOT PUT IN A BIG BLOCK but do go with the 4 speed - 3:23 or 3:55 gears - power late model disc front - big b body drum rear get axles from Moser - front sway bar - big block torsion bars - for motor use the 5.9 magnum - body wise do what ever you want but if you do something get rid of all the trim - if you change the leaf springs use ESPO stock or 1" drop springs - 16" wheels if you can find something you like - believe me that would make a great all around Valiant that would be a blast to drive - I drive the Scamp everywhere and love it the Valiant just sets