If your keeping the car for more than a year, I'd go with the better parts. There is nothing worse than doing a job a second time.
Remember the saying you didn't have time to do it right the first time but you have time to do it over.

my .02 your $$

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Ricali

03 C240 4matic wagon
95 300E 234,000
7 prior 240;s 5 still going
81 300sd gone
65 230sl gone
49 Studebaker Champion
90BMW convert.167,000
60 Dodge D-100