Hey everyone. Another Newbie to the forum. I have had a 1990 YJ 4cyl for about 2 years now. It is Basically stock. I will be lifting it soon. I am pondering either an Rough County 2.5" with 31s or the RC 4" with 33s. They seem to be right around the same price point. Are the 33s too much for the 4Cyl? Also questions about back spacing. I have a set of BLACK ROCK 997 WHEELS 15X8 with 4inch back spacing, will i run into any problems with either of the lift and tire combos i am considering. Thanks in advance for any input.