1. Adsit is a distributor of parts, not a rebuilder of engines. Who knows where they source their engines from; price is certainly an issue, but quality is paramount. If there is a problem, you add another layer of complexity to the issuewhen dealing with a middle-man.

2. Performance Porducts actually sources their rebuilt engines & cylinder heads from Metric Motors.

My predisposition is to go directly to the source when dealing with anything...

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Current rolling stock:
2001 E55 183,000+ Newest member of the fleet.
2002 E320 83,000 - The "cream-puff"!
1992 500E 217,000+
1995 E300D 412,000+
1998 E300D 155,000+
2001 E320 227,000+
2001 E320 Wagon, 177,000+

Prior MBZ’s:
1952 220 Cab A
1966 300SE
1971 280SE
1973 350SLC (euro)
1980 450SLC
1980 450SLC (#2)
1978 450SLC 5.0
1984 300D ~243,000 & fondly remembered
1993 500E - sorely missed.
1975 VW Scirocco w/ slightly de-tuned Super-Vee engine - Sold after 30+ years.