I was under the impression that all the SLP, BMR, UMI and Spohn SB's are basically the same.
I have no problems with my UMI one, and the spohn on my LT1 is identical
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2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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