William,
You will rear adj uppers but not necessarily fronts. You need the rears so you can adjust pinion angle for the CV driveshaft. Going to a flat skid will necessitate some pretty good axle rotation to dial out the vibes and lowers alone will not give you all you need.
98 TJ Sport
D44ARB/D30Detroit/Teralow/Swampers
www.geocities.com/yatezess/