For someone like me who is going to have their car on the street 99% of the time and on the track maybe 1% of the time, is it really necessary to get the IRS over the new 3 link? Do most people not go with IRS because of the cost or because there is no real advantage unless at the track, or is it just personal prefrence? I am starting to purchase parts now (non-donor) and I am about at the point where I need to decide which way to go. Also, if I am not mistaken, I can bolt the Cobra brake kit right up to the solid axle with no modifications, right? Are the drive shafts that come with the Cobra kit the right length or do I have to get wheels with a different offset? Sorry for all the questions, I kept thinking of more as I was typing. Thanks!