<VV> 62 Rampside Rear Suspension/Motor & Trans Replacement

[hauppauge21 at comcast.net]

I just received all the replacement rubber for my Rampside rear suspension. I'd like to give the Wishbone a new coat of paint also. Would it be easier to just drop the assembly   from the truck to replace everything? 
The rear of the truck seems to be lower than the front. Time to change the coils too?? I'm also going to replace the complete brake line system from the MC to the wheel cylinders.
THANKS!