The T series is not older than the P series necessarily. The only difference between the two that is consistent across the entire line is that the P series is rated at 25W while the T series is rated at 35W. There are definitely T series with a 1066 FSB (such as the 2.8GHz T9600).
That having been said, I'd go for the P7350 in that case, since it is a lower power CPU and you shouldn't notice a whole lot of difference between 2 and 2.2GHz. The extra power is more important than the extra speed as far as most laptops are concerned.
------------------------------Asus P6T deluxe
i7 965 @ 4.2GHz (200*21), 1.384V
12GB Corsair Dominator DDR3-1600 CAS 7
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