So i decided to give Gaz front shocks a try on my 88 V12 Xjs. Only test drove twice so far with two settings, but i can already tell the difference between the Bilsteins and Gaz. (And i have no affiliation with either)
The softest setting gives me the handling of the Bilsteins with a tiny bit less harshness. Three clicks firmer, i now have the harshness of the Bilstein, but oh does it handle better. The front end barely sways and feels more on rails.
Unfortunately, these Gaz will get you nowhere near oem Boge. I was hoping for a softer setting, oh well. I may try five clicks and up another day, but that must be for track use and i wouldn’t want my teeth chattering over manhole covers. This has been the second time I’ve ditched Bilsteins on two of my cars now, they are great shocks and seem to last, but there is just a harshness about them. I did really like the ride of my original Boges, but the front end swayed too much for my liking.
One other point of interest, the Gaz lowered the front end back to normal! Ever since i installed Bilstein, the front end went up. I measured, a 1/2" difference. This is important, because I’m about to put 1" eibach lowering springs, so looks like I’ll make sure to keep spacers so i don’t go too low.
Another thing, i like the Gaz stems, very easy to just hold with crescent wrench as you tighten top nut. One thing i hate about Bilsteins is their stem taking a allen/hex. No matter what, it seems to always strip as you tighten down. Not the best design.
So bottom line, if you like the smooth feeling of Boge, the Gaz aren’t for you. Neither are Bilstein. But if you want a sporty feeling, Gaz are great! I also wonder, the Koni adjustables, you could set it firmer as the shock wore out to get the same stiffness. Maybe the Gaz too?
And i have Bilsteins on rear, which actually do pretty well without too much harshness. AND I think it actually lowered the back by 1/4"!