I have spent the last 8 months in here trying to gain enough knowledge to make a sound decision on an engine upgrade for my 06SEFB. I have e-mailed many to the point of literally no return, anyway I called Zippers and got the name of a local builder they recommended. I spent quite a bit of time on the phone with them and explained I wanted low to mid range torque and plenty of power without spending over 4k. This is what his recommendation was: Zippers heads which are a part of an exchange program, Andrews TW60 Cams-gear driven, a fueling pump, and a dyno tune when the work is done of course. The estimate is 2960.00 complete. And he estimates 112-115 power and 116-119 torque. It sounds to good to be true, I had the same result estimate from the dealer on a 113 build. Anyway- I'm really looking for opinions good or bad before I set the appointment. There were also a few incidentals "push rods etc."