just finished welding and riveting the new front spring perches on my 97 300d. also replaced the springs, shocks, and upper control arms. also replaced the rear shocks and just got back from getting new michelins installed. the car rides like a dream and i have good peace of mind with the new perches and tires. i will be glad to share my knowledge the best i can with anybody who has any questions about replacing these parts. regards jim