Information on a 340 for my 69 dart

I understand the want for a 340 Dart. I felt the same. Be aware of the differences in timing cover, water pump, pulleys, etc. between earlier (68-69) and 70 and later. 70 and later parts are easier to find. BTW, someone on here has some NOS disc brake master cylinders for a body for sale. They don't show up often.