I dropped my heads off at the machine shop and had them do a three angle valve job. The shop called me a few days later and said the heads had some warp, so I told them to mill them. Unfortunately I cannot remember how much they milled. I had them order the recommended Comp springs along with new guides, locks, and seals. My bill came to $500 including removing a broke intake bolt.
I'll dig out the recipe for the Comp part number, but I wish I would have done the TFS spring kit because of price. I am currently running stock pushrods and 1.6 rockers because my budget ran dry. I love the TFS stage 1 so far. To me, it drives like a stock car and the idle is milder than I expected. I wish I had more to tell you about the cam, but it's the only thing I've ever drove with a "performance" cam and I'm defiantly not a cam guru. As far as drivability, it's been great.
My buddy had self-ported GT40's and Explorer intake, long tubes, ect and was running consistent low 12s on M/T Drs with his Reef Blue GT.