there are pros and cons to the irs.
pros
1. it handles much better
2. it looks awesome under a mustang
3. there are alot of parts out for it

cons
1. can easily break the diff cover
2. can break half shafts (wheell hop causes this)
3. all the bushings are junk rubber and need to be replaced with solid aluminum


the car will be getting a t-56 in it as soon as i get the money

i plan on doing a write up on the IRS install with pictures included

 

or another cheaper option is take the t-5 and get the upgrade kit from g-force it doubles the torque capacity of it. that's what I'm going to do.

 

i have the option to buy a fully built and bullett proof t-56

 

sounds like a plan, better make the clutch the weak link lol. dont wana over bullet proof it. better some clutch slip than breaking something.

 

The IRS (Independent Rear Suspension) allows the rear of the car to move like the front, so that both tires remain firmly on the ground, even during tight turns and on uneven surfaces. IRS is ideal for autocross style racing, but not so much drag racing.

Advantages:
Improved handleing over solid rear axle designs due to better weight transfer and tires remain on the ground at nearly all times during uneven surfaces.
More even tire wear on rear tires.

Disadvantages:
Increases overall weight 200-250lbs.
Must use special springs/shocks/exhaust layout.
Wheel hop can be a problem without an IRS brace when launching the car with higher powered applications (350 rwhp+)
Differential Cover design isn't as good as Fords solid rear axle design.
Half shafts more prone to failure in higher powered applications.
Rubber bushings are a big issue.
More expensive on all IRS related parts over SRA.
Part selection much more limited than SRA.

 

supposedly the ride quality is also better with the IRS

 

tell you the truth i have found more aftermarket parts for the irs than i have ever found for the solid

 

How much did it end up costing you?

Matthew

 

the rear itself was $1000 but the little things add up. im snot sure exactly how much i have spent so far i think around 1700 for everything down to the nuts bolts and washers. i did have to end up ordering a strange u joint and yoke for it. hopefully no drive shaft mods

 

And I don't want to spend $300 on an 8.8 lol. I can't decide if I want to save the money or go ahead and do it because being in college I am running low on money and can't work this whole second semester till summer so the rear might have to wait. And I think my parents ordered 10000K HID's not the 8000K's I asked for, anyone ever seen these? Are they too stupid looking? Should I return them for the 6 or 8000ks?