the swap of these two motors is straightforward. The only other things you should probably also take out of the donor car are: the trans (keep it in one piece with the motor and it might still have the centerforce clutch in it), the shifter (b&m short throw), the shift boot (leather), the shift knob (carbon fiber), the gauge cluster (silver surround with red needles, 150 mph), the intake (roush), struts and springs (eibach, tokico), the muffler (borla), and most importantly THE COMPUTER!!
The rims and the rear brakes would also be a huge bonus if you can score those. These parts are what made up the s/r package.
the car will work with the original computer, but the s/r computer will add about 10% more horsepower. The codes for the 99 were either NGP0 or JHJ0. This is better than buying a chip to add to it later.
good luck, it is just a shame to know that another s/r had to die
