You should be able to use the stock TPS with the new TB. The only problem is it's a PITA to get off the the stock TB.
You could also just buy a new TPS for $35-$40 at the parts store and install it with the new TB. You will then need a voltmeter to measure its settings. With a closed throttle you should have between .5-.95V and with an open throttle you should measure 5V. If your idle speed seems to be OK, there should be no need for adjustment.
Not exactly sure how to adjust the voltage after measuring but I'm sure there is someone on this message board that does know how.