thinkpad t61p

I am looking for a cpu upgrade for the Lenovo IBM Thinkpad T61p. Is the socket and the chipset compatible with the Intel Core 2 Duo E8435(thats my preference) if not with the Intel Core 2 Duo E8335, if not with the Intel Core 2 Extreme X9100, if not with the Intel Core 2 Extreme X9000 and if...