X pipe vs MAC Pro Chamber...
does anyone have any opinions on what is better, the MAC PRO CHAMBER or an X Pipe? The prices are relatively the same, so what will free up my exhaust more and give me more power?
Phantom
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1983 GLX Convertible 5-Speed, knife-edged crank, internally balanced, TRW 11:1, custom cam, ported Windsor Jrs, Manley Valves, CCs roller lifters, dual springs, ARP stud kit, 600cfm Edelbrock Torker 2, Mallory Ignition, Canton 7qt traps windage tray baffles, Hooker Super Comp Headers 1 5/8 primaries 3" collectors, Flowmasters, K&N, ASP puleys, Maximum Motorsports C/Cs strut tower K member brace, through floor subframes, Grant wheel, billet pedals, 93 seats, Keystone rims
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