I agree with CJ.
The choice of the initial project is IMO the most important decision for a successful project.
This means if you choose a project that is bad from the start it will always be hindered, at a disadvantage to other better chosen cars and IF made competitive much more expensive in the end.
Many of the rule classes have fairly restrictive rules pertaining to what can be done to the body. These rules as I have found out change and is something in the future you need to consider. The difference between a body with a good CdA and an ok CdA is THOUSANDS of dollars difference and less headache to achieve the same speed.
This is what I recommend you do, if you seriously want to break a record:
1st- find an obtainable record in an obtainable class.
This means that if you say you want to build an AABFS you need to have big pockets to break the big numbers. Search the rule book for a record that is low for the engine size compared to the same displacement in other classes. And if the project interest you....personally I am not into roadsters....I didn’t grow up around them and never owned one....just not my cup of tea.
2nd- after you decide what cherry record you want to pick find a car in that class that has the best foundation for the project....even if it cost a little more money now it will save you in the end not having to continually pump $$$ into the motor to get a brick to go fast.
Here is an example, just picked quickly in the book.
H/BGAC set in 00 @ 140
The H/GALT is 148.....same class and motor LESS a blower and over 8 mph faster.....makes ya think dont it!!!
Now that I found a record I think I can break I went to the Mayfield car aero page and found a car with good ###.
http://www.mayfco.com/tbls.htmI choose the 92 civic SI for example with a Cd of .31 and a CdA of 6.34....
If I looked for a while and did some research I KNOW I could find better....this is only an example of a good car I found.
The Honda I chose with a CdA of 6.34 will need approximately 150 (Bonneville wheel HP) to do 150 mph......is that obtainable from a 1.5K motor with a blower.....I would think I could get 150HP from a 1.5K Honda without a blower!!!!!
The difference in body to a bad car is:
A 93 600SL has a Cd of .45 and CdA of 9.54....this means a 150 HP motor will take SL to a blistering 130 mph.