I inherited a 1990 Bonnie which has over 300,000 miles on it from North Dakota to Arizona snobird journies. Doesn't require oil between changes and runs good. My question is : What advice can you give about shocks, suspension? They need to be replaced . air-shocks? Sometimes there's a load i carry that makes the rear end low. What is the ball park price for the labor and parts. That 3800 V6 has got to be the best engine a guy could hope for. Thanks.