????? for big lift truck pros

[bakerboys]

Have posted before about roaring noise in my truck but only when on the gas pedal when I let off gas it stops..My question is does this sound right. I took it to.a driveshaft.shop they said.my angles are off bad and that they will mill my blocks to turn rearend up and put a CV joint in driveshaft for $650.00 BUT that it will still roar because my pinion gear that connects to driveshaft is messed up. Any ideas. I don't want to pay that much if i still have to rebuild rear end to. Any help.would be great. Thanks
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