Fixing the 4500 will defiantly be the cheapest. I considered the 5600 a while back but in general its not as nice as the 4500, slower shifts, harder to find parts. The g56 is easy to get parts for but requires the cross member to be dropped ~2 inches. A built auto would do it but thats not going to be a cheap or easy but could get the same result. And then theres the matter of personal preference. I like auto but I like manuals more.
Either way they can all hold 450hp when put together right.
97 2500 CCLB 205k NV4500,4x4, CAI, No Plate, tuned afc, 4" straight, borgeson he351ve coming soon
2012 QCSB 2500 4x4 g56 5,xxx miles
Last edited by Dans12v; 10-29-2011 at 12:02 AM.