for the small block swap to the cutlass, shouldnt be a problem, i just swapped in a 350 to my v6 malibu which uses the same frame crossmember up front. i also helped a buddy swap one into his 84 cutlass. get original motor mounts for a malibu or monte with a 350 or 305. when bolting the mounts to the frame all the holes are there and the mounts go to the front of the crossmember. the bottom hole will hang off the front of the crossmember and you will only be able to use three bolts (this is better anyway, the bolts are a bugger to get in.) all 4 holes would line-up if you move it back 1" but the engine will be too far back. i know from experience, we had to take it back out and remount the motor mounts. i was lucky enough to already have a th 350 in my car but you should be able to swap one in and the driveshaft may still be the same length, if not it shouldn't be a hard find at a salvage yard. i also had no problems using my existing radiator.