SVT has 44mm deep fins (from European Mondeo), and a redesigned front fascia that allows more air in for better cooling (50% larger opening), and a pair of 25 inch "euro" cooling fans. Stock (non SVT) has dinky 28mm fins on the radiator...can't help you out with the demensions though, just measure your current one, i guesss.
Silver 1998 Mystique LS (v6)...ATX

Removed Emblems, limo tint, painted calipers.
Premier P630 HU with 4 Pioneer TS-A6895 Speakers with 10' Sony sub (yeah i know, i'm cheap)
Commando 501-S Alarm