You're not contemplating molesting that beautiful, STOCK, piece of history Syclone you just purchased by taking it apart to change the heads, are you?
Then it has to be tuned.....Might as well do bigger injectors and turbo to get the full benefit...And on it goes. Pretty soon you have just another messed-up, modded Syclone. It's a slippery slope, my friend. Choose wisely.
At 16,500 I think you got a good deal. Take care of it, and I think it will always be worth that and perhaps more at Barrett-Jackson, even with hammer fees.. But mod it, and it will be an instant 10k-ish at best Syclone. It's your truck. I just hate to see another beautiful "survivor" get f'd up. They're only "original" once. They don't make these any longer.
DaveP