I'll keep this one. I've got a lot invested in 904s yeah more than one. I've been really tempted to change to a glide. With the 904 I'm geared 3.91 and it's fast 5.66 @ 120 and can run 1/4 w this set up . I've now installed just about every billet and aluminum piece inside. I've broken lots of 904 stuff . I tried a 2.28 low but it slowed between .1-.2 depending on altitude . Maybe it will stop breaking stuff . My car weighs about 2775#. If I had to do over I'd build a glide especially in a light car. Yeah the wheelies are fun. But going rounds are more fun!