DSS Racing Block?

[Reamo04]

Alright, I just got into mustangs and am looking for more power. I need to get my engine rebuilt anyways, so would it be wise to get a DSS racing short block. I am looking at the DSS 331 Pro-bullet short block.

-Could I then use the parts off my 5.0 to finish the block or not since it'd be a 331 now (Im guessing yes since its the same block pretty much)?
-My goals for the car is to get 10s on slicks with a DD.
-Is there anything i would need to watch for?

The website is dssracing.com and the block would be a level 20 cnc pro bullet 331.

Right now my car has
tk600 tranny (i believe)
4.10 rear end
holly dual pump 750 cfm carb
bbk headers
afr heads
borla exhaust