What kind of experience do you have. Can you solder decently? Know how to read a schematic enough to follow electrical flow? You don't need to know the theory, or the gross or fine interactions between components. The metalbone kit has instructions and with pictures too, which is especially nice for Torpedomen, Marines, Engine Room Gang (who generally like more pictures than text) and a lot of the SUB-30 crowd who've never been taught what a Hammer is for much less picked up a nail, changed a tire, or checked the oil in a car. (I'm 62 and I'm self taught so I have a somewhat Evil, Wicked, Mean, and Nasty streak about me at times). If you can follow directions, ask dumb sounding questions(maybe to you), and then take the Snippy, sarcastic, and generally smart-ass remarks from the nuthouse surrounding the CORRECT Answers, (you have to be able to take the ribbing from those who've BTDT and wear the T-SHIRTS especially when you screw the pooch and we ALL HAVE at one time or another but some won't admit it) then you can do this yourself. It's not Rocket Science, but does involve a bit of Brain smoke, and a bit of self confidence. Plus down the road you can brag to all your friends when they come over to listen to it..........."I REBUILT IT MYSELF!"
So what are you waiting for....................