Auto Parts: air suspension, lincoln mark, conversion kit

Question
have a 1988 lincoln mark 7 wondering if you can just put rear conversion kit and not the front the front air bags are 2 years old or do i have to put all 4 springs in.

thanks  

Answer
    You can just do the rear, lots of people do.  But, you have to cap or somehow seal off the lines going to the rear, so that only the front gets air.  I think, ultimately, it would be better to do all four wheels, but it's up to you.  When the pump fails, you won't have a choice.