Doing Wheel Bearings

[Buss Peter]

Need a little help.

The time has come to replace the rear wheel bearings on Wilma. I've got the
bearing kit from TPC and the wife is off to Sears to buy the socket for the
axle bolt. Now I've got two questions:  car is 87 4kcsq

1. what size is the allen bolt that holds the caliper hanger to the hub?
2. how do I get to the top of the struts? do I need to remove the rear seat
back? if so how?

Thanks for the help.

Peter Buss
87 4kcsq " Wilma" 143K