For the pegs, I drilled holes with a drill bit, and then applied carpenter's glue.
Hmmm, didn't notice from the pic you were talking about a metal cabinet.....no idea how to do it on those unless you weld them together honestly, or dill them and use bolts, but that's way too industrial for my taste
Voila, is french for "and here you go!"
For a 450 hps....you definitely will need a cooltube...and even with a cooltube it might not be enough.