best for driveability would be poly/poly, installed properly they wont squeek or make any noise. for best performance get the spherical rod end on both ends, they tend to make noise and be a little more harsh.
for the middle of the road, you can get the poly/rod end combo. adjustable is good to get if you are hardcore racing.
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00 T/A NBM
04 Silverado SS - Sold 
00 Trans Am WS6 NBM - Sold
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