I have seen several cars of my friends here in Houston who had it done...it looks great...!!
in my own case , I wont do it , because it would then make me want to have that engine room SOOOO clean afterwards, its a driver and I dont want to spend time cleaning in there...right now its the std Firebird satin black, its fine enough for me....
but in regards to your question, it looks good and they all say it wasnt expensive....whatever that means...lol