Hello,I recently did the complete front end rebuild on an early 85(sheet
metal lower control arm).It was successful,and works great,but that cast
iorn lower control arm suspension  is the only way to go(expensive
hindsite) .That arm acts like a flywheel and absobls road shock instead of
transmitting it to you.To do it again, I would get the cast iorn parts I
needed and press out the old and press in the new, and have everything
ready to go .I would then strip out the sheet metal parts and install my
refurbishes cast iorn parts/without a lot of  down time.The ride difference
is like night and day.Those old parts will make a great boat anchor!