Replacement Clutch

diaphragm clutches work great on the street.
As mentioned you HAVE to remove the HD 340 over-center spring, or the pedal will stick on the floor. Sometimes you don't find this out until it goes there at WOT on a shift.
To deal with the pedal floating, just tune the anti-rattle spring, but whatever you do, the TO bearing must retract OFF the fingers when you let the pedal up.
My daiphragm PP has been going since the early 2000s and has over 100,000 miles on it now..
I can't say that for the factory 340 discs tho,lol. But the CFII disc was too aggressive for my application.
The factory 340 discs eventually throw springs, throw the linings, or break the center hub. But I've never been stranded; just lots of vibration tells me what I'll be doing on the weekend.
My 360 might have a lil more juice than your 340 tho.