well since you are going to the 5x4.5 bolt pattern 8.75 rear may I suggest, gasp!, SN95 mustang stuff up front. It has the same bolt pattern, kinda the same design, HUGE aftermarket support, easy/cheap to get, decent sized disc brakes for a little car like the colt. Id just modify the control arms to accept the correct ball joint and like a small aftermarket Moroso spring with an adjuster sleve to dial in the ride height.