I think somethings wrong?

[spareparts]

all right, with all the diesel experts in the house, whats your recommendation for my 99 E350 7.3, its a turbo, but no inter cooler. It has 329K on it. I'm planning to get the transmission done here soon(more preventative than reactive), last time I had it in the shop, the injector test was pretty quiet on a couple of the injectors, so I figure I need to start think about replacing them. The van gets 15 mpg on regular driving, best I got on the highway is 17, if I kept it below 70, if I get it up above 70, it goes down to 13. The motor runs OK, some times it feels like its missing but still pulls(no smoke). The only time I get any smoke is when its cold, the transmission doesn't like to shift until I back out of the pedal, as its trying to shift and when I back out, its usually blowing some smoke(more blue than black), but not a whole lot. The motor pulls good, but it just doesn't have the power I think it should, sometimes it feels like it will pull the house down, some times I get passed in traffic by a Prius. I figure if I start trying to build power, I need to think about an inter cooler, got any ideas on how to fit one in a van? BTW, this thing is my daily driver, its what i work out of, so i need to keep it dependable, and when my rock crawler is done, it will probably be my tow vehicle till i build up dually