Outer Limits 4x4 Board

im a bit confused, just sold the old 80s and looking to buy a 100s Sahara in the next couple of weeks,
im looking at the update model 2005 onwards but there appears to be three differant models that year, the ones that ive seen advertised are headed 2005 i believe there may be an early 05 before the update was brought in (as they have the differant grill etc early style)
what im wanting to know is the update models (with the new grill etc) are usually headed with may 05 model or sep 05 in the heading listing, is there a differance between these two and if so
What is the differance??? as the red book states a differance in price

all cosmetic differences.

led rear tail-lights

different badges

different grill

probably some interior changes.

Drivetrain is unchanged.

Thanks for that, but why do they advertise with the heading, May 05 and Sep 05, do you know of any changes between either of these two model dates in these update versions