Kit has everything you need and all of the parts fit well togther with no modification.
Here are some tips from my experience:
-Be prepared to buy new headers for the cable clutch to have enough clearance so it won't melt. I bought Heddmann 88408 shortys and they barely clear. Check modern driveline to see what fits.
-Save your bolts from the old backing plate. The kits does not come with them.
-Check your rearend ratio. I replaced my 3.00 gears with a 3.55 with a 289 engine to have enough RPMs in 5th gear.
The kit worked perfect. Made the whole install go smooth. The only problem we ran into was a pressure plate clearance issue inside the bellhousing, but was easliy resolved. The kit is super quality and instructions are clear.