Both of those are way to much for 450hp 
oke: stock 215s will make 450+! DDP4's are enough for a nitrous assisted 1000+hp, I don't even think DDP will even sell you them if you have a stock turbo
Look at injectors that are smaller. They will be much more drivable and won't melt anything. Even 370's with the correct spray pattern are more than you need now (cheap though) but they will be about right for 650hp with a pump to fuel them. Some DDP 2's would be good for now, or 3's for later and would be more driver friendly
The main thing that you need and that people overlook is air. Add a properly sized turbo (may I suggest a 62/65/whatever you want) and I bet you'd be in that range. Maybe more rpm and make that 10 a 100 and you should be there :Thumbup: