member status

[Sweet T]

Why do some people have senior member under their name. What's the difference?

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1988 GT, 355's, AOD w Improver kit, pulleys, equal lngth headers, off-road h-pipe, 3-chmbr flowmstrs, hypertech, k&n
1991 LX, 362, stock crank/pistons, gt-40 turbo swirl x heads, 1.6 motrsprt rckrs, torker 2, holley 650, shorty headers, off-road h-pipe, 2 chmbr flows, 3.73 rears, four wheel disc 13 frnt 11 rr, t-5, svo clutch, 3-core rad., cervini's 2.5 cowl, fms subframes, fms strut tower, koni quads, fms lowering springs, monroe struts, lakewood 50/50 shks, factory 5 u+l controls