Look at the following thread:

http://www.peachparts.com/shopforum/showthread.php?threadid=90225&perpage=15&pagenumber=2

second page, my last response, which is the third from last post.

It should start well and pass emissions. As far as "throttle response" is concerned, there will likely be no change. There's nothing wrong with the throttle response of these engines - it is essentially instantaneous, but the relatively soggy low end torque and lazy automatic transmission response can sometimes be misconstrued as "poor throttle response".

Duke