Have a '69 8 3/4 on my 64 barracuda and wanted to upgrade to larger brakes and bolt spacing. It has 10x1 3/4 now on 4"BS. If I go to 10x2 1/2 can I use my current back plates? Also, what does this upgrade do to the overall length of the axle, for both the 10x2 1/2 and the 11x2 1/2. Am I correct in thinking the 11's (with fins)won't fit 14" rims
