Little old, but when i put my cruiser coils in my 2nd gen(should be simmiliar), long story short we ended up disconnecting the panhard bar, with no help getting the springs in but i was trying to make a point to my cousin.
Getting it back on was fun
, maybe not the safest way but it worked good!
Ended up taking out my tow strap, connecting it to my tow hitch, and had my cousin pull it to the side slightly with his truck. THis made it go on easy!
Anywho, now i need to buy a bracket to extend it cause the drivshaft hits the gas tank during axle travel.
Maybe that will help someone out in the future, just thought i would throw it out there.