Addon and replacement methods are included.

BMW E30 M3:

This is based on the Group A race car so it's faster and more powerful than a normal E30 and has more grip but still has a little oversteer on the limit. It replaces the Sentinel.

0-60: 4.3s
0-100: 13.5s
Top Speed: 175mph
Weight: 940kg

BMW M3 Drift:

This handling isn't like some other drift mods as it can be quite difficult to get to slide so it actually requires some skill as it's quite understeery off-power but at low speeds you can break loose with power alone and at higher speeds you need a flick and maybe a handbrake. It replaces the Feltzer.

Top Speed: 175mph
Weight: 940kg

GT86:

There's not a lot of power but there's not a lot of grip so you can get sideways at pretty much any speed and it's usually very controllable. It replaces the Futo.

0-60: 7.2s
0-100: 18s
Top Speed: 145mph
Weight: 1250kg

GT86 RB Drift:

I've done a drift handling for this and it's more powerful than the M3 so it's much easier to get sliding but as a result it's harder to keep in a straight line and the steering lock takes some getting used to. It also replaces the Futo.

Top Speed: 195mph
Weight: 1000kg

GT86 RB Grip:

This is essentially a race car so there's a lot of grip but also a lot of power so it still can spin it's wheels but once you get up to a decent speed and if you're not silly with the throttle it drives pretty well. This also replaces the Futo.

0-60: 2.9s
0-100: 5s
0-150: 11.7s
Top Speed: 225mph
Weight: 1000kg
Quattro:

This is pretty well balanced, there's a little bit of oversteer at really low speed and at top speed there's a bit of understeer but normally it just stays planted. It replaces the Kuruma.

0-60: 4.5s
0-100: 12s
Top Speed: 155mph
Weight: 1300kg

Full credit for the original pack goes to Skint_94. Download the files from https://www.gta5-hub.com/vehicles/skints-add-on-car-pack.

Installation instructions in Read Me.