i need help with my 70 dart

my name is adam i just joined this site and i recently came across and 1970 dodge dart swinger for free and from what i can see i the only body parts i can see that i need to replace is the fight front fender and the right rear quarter panel but have no clue where to get them so any suggestions on websites would be nice i also would like to find a 440 and does anyone have any suggestions on what 4 speed transmission to put in it any suggestions would be appreciated thanks