Do you know if it has a RTO9513 or is it a direct RT613? If it's the direct, they are a sum beach to get used to shifting. The 9513 overdrive is a bit easier, but not much. One thing to find out, 3208 usually had push clutches, no clutch brake. They had an air operated trans brake. If they don't work, they can be troublesome to get working. As far as your original question, that turbo should pull the load just fine, just don't expect it to last forever. If it doesn't have a pyrometer, I would think hard about putting one on so you don't cook it.