[DAVE RIBEIRO]

Rumair,

My race car is a 77-78 Formula Firebird,With a
10 bolt(8.5),spool/MW axles, etc. I use slapper bars with no -U bolts..I did add a 6-8" section to
both bars so that the snubber is right under the spring EYE, not on the flat leaf spring..This helps in two ways,stop springs from bending and stiffens the whole rear set-up...You need to make
sure your pinon angle is 3-5 degrees down towards
the ground/downward...You need to be sitting in the drivers seat, the drivers side snubber should
be right up against the spring..The passenger's
side should have 1/2-1" space at the snubber.....
This is a good starting point, so don't worry about U-bolts, make sure those are hardin bolts??
Good Luck and go have fun racing..Dave..1033/stock