Anybody on here who knows if there are any tanks that will fit over the frame of a dt 250 1979?
My original tank is really trusted out and Ive been looking at an indian copy but its really pricey after customs and vat.
Also the used ones seem spotty as hell and often Loke like they may be just as rusted.

Im not even sure if i think they look good enough. Så Ive been eyeing the tank of the yz250-400 -80-81. Wil it fit over the frame though?
Of does anyone of you have any idea of any other tanks out there that will fit?

Kind regards Alexander from Sweden 

Greetings from Tennessee USA. 

Welcome from NZ.
Just cheating a bit & comparing frame shapes on partzilla i'd guess that "77 & "78 will fit a "79 therefore a DT400's from those years should fit too.
Now i look further i'd guess that the IT175 from "77 "78 "79 could fit but might be a bit shorter leaving a gap between seat & tank.
They'd be plastic tanks on the IT .
I used a blue IT175 one on my early 360 'just because i had it', was good too.
Links bellow for a quick comparison of that basic frame fat shape with the shock up the spout.
www.partzilla.com/catalog/yamaha/motorcy...50f/frame-side-cover
www.partzilla.com/catalog/yamaha/motorcy...50e/frame-side-cover
www.partzilla.com/catalog/yamaha/motorcy...50d/frame-side-cover
www.partzilla.com/catalog/yamaha/motorcy...75d/frame-side-cover
www.partzilla.com/catalog/yamaha/motorcy...75e/frame-side-cover
www.partzilla.com/catalog/yamaha/motorcy...75f/frame-side-cover

Pretty sure the tank changed in 1979 in the USA at least... became more "rounded" and the side panels changed slightly.   In other countries you might have received the earlier 77-78 type or the later more rounded type.  The good news is that other countries received the DT250 beyond 1979 and the DT400 beyond 1978 so looking outside the US might find something?

This old thread might help... 
yamaha-enduros.com/index.php/forums/1977...250mx-need-some-help

YZ's and IT's tended to have a larger diameter shock than the DT so the tank tunnel is wider and would likely fit over the DT frame.  Not sure of the mounting differences though.