Warhammer 40K spacemarine:Whirlwind into rhino?

you can convert it pretty easy if you still have the parts available from when you built it, since all those sorts of tanks come with the full rhino chis. All youll need to do is use a knife to take off the panel that the lauchchers sit in, and replace that with the two door peices. Other than that there is no diffeence between a whirlwind and a rhino.