If you're constantly driving it like a street racer and acceleration from a stand still is important, then you'll really like the Weddle 3.75/2.25
I could go on (and on and on) about the benefits about each mainshaft, but the question is- what did you send to Berg's? The mainshaft is one of the major pieces (the other being the pinion shaft) that causes the months long hold up, so you should have a modified mainshaft in your posession- correct? If you change mainshafts at this point you'll be waiting for months again.
I believe Terry runs 3.78/2.06/1.48/1.18/0.89 in his 5 speed. He talked about the shorter 3-4 shift being more fun when canyon carving, and not caring about the slightly longer 4-5 spacing. I had suggested (a few pages back) 3.78 (or 3.80- whatever you sent Berg)/2.06/1.48/1.12/0.89, which isn't that much different; either will be a pile of fun, as you can see below.
http://calc.teammfactory.com/i...26+2&trannytype=
You talked about being able to do 75-80 on the freeway, and the only criticism of both gearing examples above is that 3500 in 5th happens at about 74 mph, so if this is one of the non-negotiable parameters, then you need a .82 5th gear which will allow 80 at 3500rpm. A couple different ways to go- in the first example,
http://calc.teammfactory.com/i...26+2&trannytype=
the recovery rpm for each gear gets higher (as it should) a little more evenly. Otoh, the 2-3 and 3-4 shifts in example 2 are again quite short (I've kept 1.48 in 3rd and 1.12 in 4th so on the street it will be a blast!), but now the 4-5 split isn't quite as tight, although the recovery rpm is still almost 200 higher than stock 3-4 gears. I don't think the 2 are so different that (no matter which you pick) you'll wonder what the other is like.
Given the specified highway speed, I don't think you should consider the 3.75/2.25 mainshaft set- it spaces 3, 4 and 5 out too much. I have more to say- check your pm box. Al
PS- This is what your mainshaft will look like- (yours will just be a little longer)-