Our recent Harley build by 2 members has this as a hit. Both had cams and Pipe work done in recent years but this gave them what they were looking for out on the open road. More torque at higher speeds and a low end to match.
For us its a go get-er done. Be sure to add a super tuner and a dyno to get max HP

I upgraded my SG an HERITAGE from 103 to 110 as a tech and Rider I don't see why anybody who really rides their Harley wouldn't want these upgrade kits they make a GREAT BIKE EVEN GREATER ! little train may under go upgrade as well maybe a 124 hot kit from S&S IF I don't sell it first. LOL CANT KEEP'EM ALL !