What engine for my Wife's 70 dart

Either there was a 340 in there at one time or someone was going to dress the 318 up. The exh mans are from a 72-73 340. There not the desirable 68-70 mans but still worth something to someone. They could be used on the 318 too. You will need to change one motor mount in order to put a 340/360 in there. Crackedback has those. Otherwise, you may need a driveshaft mod depending on the trans and you might have to rethink the rearend if its a 7.25 and anyone will be getting on the 360 at all. GL