Mine is the same other than it is a low roof, plus a 120 that said I get between 400-450 miles per tank, tops out at 80 though there is more there but don't feel comfortable hanging on for the extra top end speed. I did fiddle with the pump as it was pretty gutless to begin with.
http://www.fordtransit.org/forum/viewtopic.php?t=3968
The only addition to this is that I have also used the ball bearing mod to cut all the vaccum to the EGR, it DOES increase the engine noise....(induction roar) but it pulls better than 'just' what is contained in the thread. I noticed zero difference with any smoke as this is one of the benifits alledged to be got by using the ball bearing.
Though probably not related my oil consumption has appeared to drop?? I was topping up every so often but very little in the grand scheme of things now it is just a check of the oil and not having to add any so maybe it has had this side effect...I do doubt it but who knows for sure?
By way of experimentation I replaced the Air induction flap operating rod which dropped the noise BUT the power went down...ok the power was still above 'stock' but I had got used to the power plus the rod being in place increased the foot pedal pressure so made for driving more of a thinking process, put it all back as per the thread and now it is smiles again.
I will possibly remove the EGR entirely come the spring with blanking plates etc but as I said that is a job for the spring.