The IRS has nothing to do with wheelbase, But the Backdraft is a 92"wheelbase. The ERA, Unique, FFR, and most others that have/offer IRS are 90" wheelbase, just as the original Cobras were.
There are no stupid questions if you don't know the answer. It is stupid if you don't ask. If stupid questions were against the rules here, they would have already removed my registration after the first day
