P-40 TWIN ENGINE

Hi all .... Ok I have been doing a little research and I have found information on a twin engine version of the P-40. It is my understanding that this was done only as a "mock-up" and never put into production. I have seen a couple of pics and a few pics of a small plasitc model. What I am hoping to do is to make an actual flying RC model of this aircraft. In order to do justice to the plane, I am searching for either a 3-view drawing or an actual measured drawing of this twin engine P-40. Can anyone out there shed some light on wnat I am looking for?