I have a 1/2 ton 1997 suburban 4x4 with a bad rearend(3.73). I have found a 1/2 ton 1998 Chevy pickup 4x4 with 4.3 V6 manual transmission. The owner says that the code in the glove box is a GT4, which means it is a 3.73. Will this work in my suburban? Is there any more info I need before I go this route?