fang performance and new shelby hood

the 05-08 Mustang GTS Ram Air Fiberglass Hood on that page you sent me looks exactly like the fang hood. louvers and all. and its 1100 less. i wonder why that is.

the 05-07 Mustang KR-Style Twin Scoop Hood on that page looks good too but cost 200 more than the above one. I wonder why. the gts has louvers and the kr style does not

also I wonder if the above hoods can be locked/bolted down.
 
If your intrested in a KR hood PM me I know a guy that makes the a few different hoods. Here is some pics of his KR style hood with functional heat extractors in the back.







Here is a 67' style hood he makes also.





Ive seen both these hoods in real life and they were even test fit on my car, the quality is great on these hoods.