X2 There is a grease fitting kit you can buy so that you can grease the upper control arm bushings. Here ya go: http://www.cjponyparts.com/CONTROL-...gree-w--Installation-Tool-1964-1973/p/HW1126/
X3, the upper arm bushings you can grease, the perches will have to be replaced if you find that they are the source of the noise. Grease 1st.
Upper a arms squeaking............. I have owned a 70 and 76 Mav and they both squeaked like crazy in the winter especially. Thank god for the internet............found a tool that screws into the hole the plug comes out of. Comes with special round tool that scews into hole, wrench and several other grease needles for various suspension pieces and some grease zerts I had extra. Cleaning my stuff out lately and don't want to throw out. Can send pics to your email. $ 11.50 shipped.......like 30 bucks back in the day. Jetmeck@aol.com