I have a used 3905 chassis, It has 4 extra holes drilled in it each side in the center from mounting a vtwin, no structural issue, its rit dyed black. I have the stock center braces and battery hold downs (not pictured). I have a center skid but i painted it red, very poorly LOL. If this can do for ya send me the usual $5 shipping and its yours. Supposed to get a few feet of snow tonight so dont know if I can take it tomorrow as my jetta runs like my vxl rustler in snow, and i need to take that stuff off it anyway. But ill have it out by Saturday latest.
P.S. if you want the alumunum braces and skid pm me