OEM wonder bar
Joined: Apr 2017
Posts: 1,149
Likes: 445
From: Northern NY
Car: 1988 Trans Am GTA and 1979 Trans Am
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: Borg Warner 9 bolt 3.27
Re: OEM wonder bar
I would just go new aftermarket from your favorite vendor, most of the good performance handling companies make one like BMR and Spohn etc.
I went with Top Down Solutions and have no regrets and it’s a quality made piece that still works and looks great today. It’s an easy install and well worth it IMO if not to just improve handling but strengthen the front frame around the steering box.
I went with Top Down Solutions and have no regrets and it’s a quality made piece that still works and looks great today. It’s an easy install and well worth it IMO if not to just improve handling but strengthen the front frame around the steering box.
Re: OEM wonder bar
I would just go new aftermarket from your favorite vendor, most of the good performance handling companies make one like BMR and Spohn etc.
I went with Top Down Solutions and have no regrets and it’s a quality made piece that still works and looks great today. It’s an easy install and well worth it IMO if not to just improve handling but strengthen the front frame around the steering box.
I went with Top Down Solutions and have no regrets and it’s a quality made piece that still works and looks great today. It’s an easy install and well worth it IMO if not to just improve handling but strengthen the front frame around the steering box.
Joined: Apr 2017
Posts: 1,149
Likes: 445
From: Northern NY
Car: 1988 Trans Am GTA and 1979 Trans Am
Engine: 5.7 L98
Transmission: 700R4
Axle/Gears: Borg Warner 9 bolt 3.27
Re: OEM wonder bar
Supreme Member




Joined: Feb 2021
Posts: 1,215
Likes: 453
From: WA
Car: 1989 IROC-Z
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: BW 9 Bolt / 2.77 Posi
Re: OEM wonder bar
OEM ones are just a round bar kinda poorly welded to some brackets. They work but honestly aftermarket will look better and likely be even stiffer.
Supreme Member




Joined: Jan 2012
Posts: 2,027
Likes: 34
From: Washington State
Car: 1983 BB 1995 Z28 Camaro's
Engine: 454-350
Transmission: TH350-4l60e
Axle/Gears: 373 posi-Stock
Re: OEM wonder bar
I was lucky, I scored a nice used one on ebay. Just cleaned it and a good coat of paint
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Joined: Oct 2012
Posts: 104
Likes: 22
From: Glendale, AZ
Car: 1983 LU5 Trans Am, 1967 Chevelle
Engine: LU5, LSx
Transmission: 700R4, 4L60E
Axle/Gears: 3.73, 3.73
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