Buy new heads or pay to get mine freshened up?

[dhamilton62]

Just wondering your guys opinion on this. I got a new crate 350 about 6 months but it's now got about 5k on the motor. The old motor I had was a slightly built 350 and had some camel double heads with threaded rocker studs and what not. I was thinking about running these again but wanted to get them all freshened up and the local machine shop said they could do it all for $350. Should I just pay the 350 and run those 64cc heads or save up some more cash and buy a set of aluminum heads? I'm not too worried about weight but would it be worth it to spend about a grand instead on something new? Thanks so much!