I am looking to buy a used 24 foot Safari Trek (95 or newer)and would like some information on the 6.5 GM diesel. The dealers tell me that the 6.5 is worn out around 100000 miles. Does anyone have this engine in your rv or truck and how does it hold up.I will be pulling a 19foot Grady White boat with it at times. I live in florida so I dont have any mountians to climb and I am not a speed demon. I would prefer the 454 GM gas eng. but I have'nt found one yet.thanks for any info.