I don't know if you fellas all ready know this but there is a site called http://www.indigospeed.com that has aluminum lightweight underdrive pulleys, flywheels, and radiators, for first gen pros. they didn't specify however on the lx dx situation. you probably have to cal to find out.

 

Group buy on the pulleys!!!

 

on the site it said : "Gains as high as 10 to 28 horsepower have been seen. "

is that true ?......that's a lot of horses there......