Is it really worth all the money to build a 20B? Strictly speaking from a performance standpoint is it more sensible to build a 13B?

 

If you have that kind of money, ingenuity, and drive... It can be worth it. Cutting corners and lacking knowledge on that project can cost you.

More sensible? Yes.

 

It depends on how you define "performance standpoint".

It also depends on how much money you have to blow on your sports car. I am sure that Jay Leno would consider a 20B worth the money more so than his paperboy would.