This HO shell sits on a slightly modified Bachmann Doodlebug chassis; you may need to remove the light board and/or interior details to fit the shell, which slung pretty low like the prototype. This model also includes support crossmembers to help prevent warping during printing; you'll need to cut them off before installing the shell. Please note that the photos of the completed model used a previous version of this file which I have modified to increase printability by widening it be around 5% to allow for thicker walls. Learn more about this and my other models on firstpersonscalemodels.com