What they said, it was not the head tick then. It may have been a lash adjuster, exhaust leak etc. Did you change the oil? Either way, at least its gone.
thought i had the head tick when i first bought my cobra, was paranoid as hell. the tick was actually coming from where the midpipe meets the headers the nut wasn't tight and the exhaust was ticking! you may want to take a look at that
A little dirt in a lash adjuster keeping it from pumping up will sound very much like a bad guide. The fresh oil change will very often take a few drive cycles and miles to clean out the lash adjuster.
If you are unsure of the previous owner's change interval and which oil he used, you might want to do a filter change and top off, assuming you are using a top shelf synthetic currently.
lash adjuster is where i was going with the oil change question. I'm never in the right place at the right time to jump on a deal like that. Great find man. hope it's fixed!