Without getting into technical stuff - I think Brian's dead on. IMO, you need to decide a few things - Class to be run and budget (overall and engine) need to be worked out. THEN you can decide on what will work for you, and what concessions if any are needed. A lot of bracket guys are going pump gas due to cost. But just like Brian said, the consistency of pump fuel is terrible. So you have to realize that fuel can cost you the round when otherwise everything is perfect. IMO, if this is a race effort, start with the budget, then work out the class you can be competitive in. An 11.60 car will be put together much different (and be much cheaper) than a 10.90 car and a 9.90 car is that much more than 10.90.