I just wanted to add....it would be very hard to swap one in a blazer anyways. Those motors are almost completley vacuum controlled. They have vacuum lines EVERYWHERE! The are really easy to break, and if you break any vacuum line or have any leak somewhere, the car wont cut off unless you get out and hit the kill switch. The vacuum lines make it a pain in the arse for me to work on mine...and probably near impossible to transplant into anything.
-Harrison