what sort of bar do you have on? is it steel or ally?
I recently put a MCCsteel bar with a 13000 pound winch on my s2 x240 put standard height pathfinder springs in rear and wound up my stock torsion bars,had wheel alignment done last mon and all is great.
car sits level with about a 1 1/2 inch lift all round no handling issues at all.
be carefull about upgrading to aftermarket torsion bars,i bought an entire suspension pack from iron man for my pajero a few years ago,the front end gave a bone jarring ride and handling went out the door as well,ended up re installing the old bars.
my suggestion would be to get a good wheel alignment and ask them to wind stock bars and see haow you go,may save you some cash! if it's no good then go with the aftermarket bars,as for EFS i have used some of their products before(not torsion bars) and not had any problems.
2011 s2 x240 king springs,2''lift,uhf,mcc winch bar,13000lb winch,hayman reese hitch,low range RWD only mod,satnav,weather sheilds,tints,scan gauge,HD dash cam.and a little smelly cardboard tree that hangs on my gear shift.