The i7s run hot whatever you do. You've got another 10c headroom but if you really want a better air cooler then a lapped TRUE is probably about as good as you're going to get. Make sure you get a good high RPM fan to go with it.
Ya, I also need a 1366 socket heat sink.... And would the Lapped TRUE fit in a
vertical tower, and will it eventually warp the board under its weight?
That is the purpose of the back plate, the motherboard will no warp with the backplate properly installed.