I restarted the game earlier and made through the missions until I got to Just Business mission and tested d00m41k's method.
Method: Proceed through the mission as usual until you reach the cutscene where the Packer is about to plunge into the ramp. At this point, type the health cheat QUICKLY before the cutscene ends. If you do it correctly, Smoke will disappear from the bike and you'll fail the mission. In this case, if the last button of the cheat is pressed after the front wheels have been lowered, the Sultans will fly out. If not, get in the Packer and drive it through a slope until the Sultans fly out of the Packer (or use the flying cars cheat). Either way, get in one of the Sultans and drive it to a garage.
This method will work without mods.
Same with the Sultan method except that after you get in the Packer, drive it through a slope until the Sultans fly out of the Packer (or use the flying cars cheat). Either way, fly the Packer to the Doherty garage using the flying cars cheat or impound it.
I used a method shown in Stea1thman's video of him obtaining the EP LS Police during the same mission. I found out that, the bike used by the last biker cop (who dives to the back of the car) is found lying on the road near the train tracks with its properties preserved. You can save it to a garage.
The method: Proceed through the mission as usual until you get to the car chase part. Don't shoot the police cars until you pass the car wash. At this point, shoot the police, keeping track of the car health to avoid premature failure of the mission. After the biker cutscene, shoot the officer that jumps to the hood. Don't shoot the police cars until the second officer dives from his HPV-1000. The bike is the one you're obtaining. Shoot him and repeatedly press the exit vehicle button until the car explodes and the mission fails. In some cases, you will be stuck under the police car behind you. If this happens, try again. Sprint to the end of the alley. The bike will be found lying on the road near the train tracks, with its properties preserved. Get on the bike and drive it to a garage.
Edited by XFiveDragonsCJX, 29 April 2012 - 06:16 AM.