Proly had a 3 spd trans behind the 340 with lower gears as well .I proved that slapper bars can stop spring wrap ,and control wheel hop ,create lift (hence the wheelies all day),and lower your 60 foot ,plus make your car more consistant on a Mopar for $30.00(i'd have to say that either a 1.60 or a 1.61 on ten passes in a row is fairly consistant).What more is there to prove ???