I installed my 440 with 727 bolted together using the Schumacher Kit w/headers into my demon last weekend , By myself with a cherry picker. It was a tough one. I did not bolt up the trans to crossmember , only loosely bolted up the motor mounts. The drivers side was the tough side for the header install. I had also prior to this cut back the original colum shift housing about 2 inchs. Power steering would make this swap tougher. The 187 oil pan also had to have a wack or two with a hammer for idler arm swing. The deal is that none of the A bodies seem to be the same exactly on the K frames.My friends 71 duster with the same combo, has different clearance measuments between the oil pan and K member. Main thing I can Tell you is take your time and have some patience with it.