We have been driving these for a long time. first a 2000 then (2) 2003's all with the 4.7 which actually ha has been a good motor for us.... Always first change to synthetic oil because I think it sludges less. The last one is all wheel drive vs. the others that were 4wd. The all wheel is pretty good. Basically simple to work on vehicles with cheap replacement parts. As long as they are not too rusted out..The 2000 had the best thickest rear leaf springs. I bet your 98 does also.