For sale: 1939 Chevy Mustang II Chassis Engineering IFS Crossmember, $500. See attached pictures and prices for other Chassis Engineering new parts I have for sale. I have also attached a picture of the ES-1125 Trans crossmember for $250. These parts are for 37, 38, and 39 Chevys. Must sale, make an offer on all or part. I also have used Mustang II spindles, control arms and rack and pinions. I also have a good 39 Chevy frame for sale.