Wheelbase between the 2 bikes is exactly the same at 55.3". Rake and trial for CB is 64/105 and the F3 is 25/94. So you need to now enter the modified CB front end (different offset room stock CB) with 17" tires and the new CBR swing arm into a calculator to determine where you are.
Understand, it may differ from the stock CB, but as it nears the F3 it gets more spry. There's trade off is quickness of steering (more experienced riding) versus too slow trail for dumpy steering. You just have to work the numbers... It may prove beneficial to have Devin cut you some custom offset or use his adjustable offset triple trees to achieve the rake/trail you desire.
Cal, you can't really compare wheelbases when talking swingarms, the CBR600 has a far more compact engine allowing the use of a longer swingarm, it also has a different swingarm pivot to steering head ratio which has a lot to do with why modern bikes handle far better than the older bikes, as well as numerous differences in rake and trail.... The shorter gsxr front end will bring the front end close to the 600 rake, 1 inch lower equates close to 1 degree of rake, so both would have around 25 degrees of rake, try and keep trail near the 4 inch mark with this set up, especially if you end up with a slightly longer swingarm... With the current parts the front will be close but the rear will be too long, remember that the 500-550 already have a longer arm than the 750's, with their bigger {than the 750} stock trail number, it makes the 500/550 a stable, good handling bike stock...
I'm sure you already know most , if not all of this already...
PS, you posted again while i was writing, looks like you beat me too it...
