do i have enuf room for 400w hps

Ok so i picked up a 400w setup with ballast from a buddy that was sellling his stuff.. 70 bucks.. so didnt want to miss the chance.. and i just want to make sure that my current box will be able to house this puppy without bbq'n my babies..

my current setup is 20"x36"x58"
im currently vegg'n 2 now under about 12500 lumens.
8--6500k daylights.
2--3000k
when i put them into 12/12 i want to switch them under 400w HPS ...

you should have enough room it looks like, just make sure your temps stay down with it in there and at worst case scenario you have to make your own reflector for it.

yea.. ok .. thats what i was thinkin should i just mount it at the top .. and yea i found a reflector online for about 30 bucks.. that imight go with .. i just dont have the ingenuity to craft one myself.. i dont think .. lol

http://www.htgsupply.com/viewproduct.asp?productID=46343
this is what i was thinkin .

yeah mounting at top should be fine depending on when you install it and how big the plants are, if there short put in on the chains you have for the cfl's until they get up in height then the top will be fine.