Thanks chaps, I think I just bought a totally useless class 45xx, As BernardTPM says, The Dapol/kitmaster prairie is 61xx class....DOH!
I guess some research is needed on my part to assess wether or not the 45xx chassis can be adapted, not sure of wheelbase lengths or driving wheel difference between the two class yet.
Hornby does offer a rtr 61xx chassis, allthough DavidCBroads post has rather put me off the whole idea. converting to a County Tank is interesting idea melmerby, ya never know.
This whole project was started by my interest in learning the black arts of kit building and an impulse bye of the prairie kit,,,GWR stuff isnt my cuppa tea anyway as you might guess from my forum name I'm a LMS fan.
I can see I need to research the loco to see what options there is open to me, other then just building a stationary object and quickly moving on...(I have started collecting various waggon kits to practise on) also, some rtr waggons that will need work.
On a side note, I have become obsessed with cranes for some strange and unaccountable reason...having spent the last two weeks hoovering up any oo railway related crane models (eccept for that really expensive bachman 75 ton thing).
many thanks
Roger