Help with torsion key sizing

[Duckstar]

Hi all, Im wanting to lower my 97 awd to make it handle and sit a little better. Im gonna get a flipkit and drop shocks on the rear (will probably have questions on these later!) and some drop torsion keys for the front, the keys come in 1.5" and 2.125" sizes and Im not sure which size I need, is there a way to tell what size I need for my van by the year or VIN number or will I have to remove them and take measurements? I live in the UK so need to order the right size first time!
Any help appreciated guys, thanks in advance!

[TDMobile]

I would just turn down the torsion bar retaining bolts....I took mine out, gave me about 3.25" drop, and the only real difference in the ride AT ALL is less body roll. Literally changed nothing about how the road feels and looks a bit more aggressive.

I'll probably get crucified for this, but no one can tell me that my personal experience is wrong. Happy hunting in any event.

[Duckstar]

Is it safe to remove the bolts completely? I was wondering about ride quality as Im also worrried about it still being a bit too bouncy when lowered and nobody seems to do lowered shocks for the front on an awd.