I have a Ford F450 1988Question:  I need a ZF542Answer:   We can provide a rebuilt transmission that is dyno tested for your application. Order our part number MtFRD043, for 460 Gas 4WD as this is a F450 therefore will use the 4WD transmission because it has a brake assembly one the rear of the transmission. Your cost is $1366.67 plus a core deposit of $500.00 plus freight. This transmission has a one year warranty.If you would like more information give Scott a call toll free 888-824-2012 he can help you.If you register on our web site you can qualify for a discount. Follow this link https://www.midwesttrans.com/webapp/loginStart.do