I have a 1997 GMC 1/2 ton 2 wh dr Sierra ext cab with a 5.7L engine, bad automatic transmission. Will that engine fit and work in a 1995 1 ton 4x4 with a bad 6.5 diesel engine, 5 speed transmission, 1 ton truck. Kind of in a hurry for the info. Trying not to lose this 95 truck if it works.