the dart that you have came with 2 different "K" frames, an 8 cylinder (small block) and a 6 cylinder (slant six). the engine you want to put in won't bolt up to the six cylinder frame. as someone mentioned in an earlier post, there are some manufacturers that offer motor mounts to put the 8 cyl in the 6 cyl. frame. you will have to change the oil pan and oil pump pick up tube. the truck engine is rear sump and the car engine is center sump. be sure to get a center sump oil pan for a 360 as the 273, 318, 340 pans will not work, the 360 has a different radius at the rear journal. check the length on the transmission tailshaft as there were short shaft and long shaft transmissions. if the shaft is the same length you will be able to use your driveshaft, but you will need to replace the front yoke as the 727 uses a larger diameter one. if you have a 7 1/4 rear end (which you probably do) i would suggest you change it out for an 8 1/4 or better yet an 8 3/4. shop the bone yards for one. it should be easy sailing as just about everyone sells parts for a small block v8 dart because they were available from the dealer. let me know if i can help. i've been a chrysler dealer tech since 1970 and still doing it. ken