Two unrelated questions. First, I am interested in lifting my Grand Wagoneer but don't have much discretionary income at present. On Craigslist, I've found two people selling used lifts (thus bringing them into my price range). The first is a Rough Country 3" with leafs in both front and back for $350. The second is a Skyjacker 2" with leafs in front and blocks in back for $150. Both sellers claim that the kits were not installed for more than 3 months at a total of 500 mi. My question is this: what is the practical difference (as in my driving/towing/off-roading) between rear springs and leafs. As a sub-part of that question, do either/both seem to be reasonable deals.
The second, and unrelated question is as follows: On particularly cold days before my truck has adequately warmed up, and especially going uphill, when I accelerate the car will jerk- what might be the cause of this?
Thanks, in advance, for your help and suggestions,