[bbcmudtruck]

For starters, the topend packages are advertised with higher output than I've ever seen someone on the dyno end up with. Not saying that they are bad packages, just don't think your going to bolt on 400+hp and tq. For the cost of a topend package, you could do several things to make your motor come alive. I'm a big fan of the AFR heads. They are pricey, but you get exactly what you pay for. Go small on the heads, as they are very efficient and don't require huge runners to get big power. The Brodix Race Rites are another good option. A good intake, set of rockers and a cam to match your heads will yield a great little motor. Its easy to just pickup a pre packaged top end deal, however I'd spring for just a little bit more money (if that's an option) and go with a retro fit hydraulic cam and lifter setup to match your heads and intake. It may sound daunting if this is your first build, but if you just call the right shops, you'll have everything you need. Actually you can call one shop in particular that will set you up right the first time. Chris Straub. Google claysmith cams and that's your guy!