Thanks allot for the advice. I`m keeping my 300cd as I already replaced the fuel and injector lines with Viton lines. I run biodiesel and if you say the 98' has alot more rubber it would make me worry. I`ve already done much work on the 300cd so I know what it has and it needs. and it`s correct. I paid $2300 for it and a good 98" mercedes diesel is over $10K.