Help please asap!

the v8 car will have 10" brakes and your 67 will have 9". I'd swap the drivetrain and suspension from the 72 and replace all brakes lines while I was at it. 67-72 a bodies had the same radiator opening with a 6 or an 8 cylinder. The driveshafts will be the same since they both are Dart's,have 904 trans and 7 1/4 axles.