Would a custom can be best, sure but is also the most costly option. The TFS has always worked good in these type of situations and has yet to leave anyone I know dissapointed in the search for more power. I go back and forth on the custom cam at this level. If it were a power adder situation I would say custom cam all the way but I wonder how custom these custom cams are. I think I'll start a thread asking for more info on people with custom cams hoping I can satisfy my curiosity.Why? An OTS cam is almost $300. There are plenty of people including myself who have used custom cams for cars that are 300-450hp. It's not only improved performance, but better drive manners, no surging idle issues or bucking.