[KEISLER]

If you are looking for the shift quality of the T56 Magnum, you should check out our KEISLER Rallye Sport RS 5-speed. It utilizes the advanced synchro technology developed by Borg Warner and 3M for the T56 and T45. Parts are directly interchangeable with Viper T56, for example.

The RS shift quality is, in my opinion, better than the T56 because the linkage system in the T56 is massive for the 5/6/R shift rail system. The T56 was originally developed as a truck transmission for GM 1/2 called T55. It never went into production as a truck tranny, but kept the design.

The RS fits our muscle cars with no cutting in most applications - all GM F, A, X, and B-body. This is due to our new transmission case, along with the use of new PerfectFit designed shift components.

All RS transmissions come with a premium shifter mechanism: adjustable but preset solid shifter stops, tunable shifter bias spring (we select the right set for your application), bearing materials under all moving joints, sealed, and no plastic junk anywhere.

Pricing for RS 5-speed kits (incl new dynamic balanced driveshaft, crossmember, isolator, speedo cable/gear, pilot bearing, hardware, console nameplate or shift knob, fully illustrated instructions) starts at $2295 for the RS400 kit, $2595 for the RS500 kit, and tops out at $2995 for the RS600 close ratio 600 torque kit.

The RS uses your stock bell, clutch pressure plate (and fine spline GM disc for 500/600 models), put the shifter exactly in the correct shifter position, and includes a 3 year blanket warranty.

We have been selling the RS for 3 years now as the T45RS in the lower torque format, non PerfectFit design. The RS 5-Speed is a redesign of the T45RS with many new parts, including higher torque capacity 1pc shoot peened 9310 CNC ground gears among others.

RATIOS:
RS400/500 3.37, 1.99, 1.33, 1.0, .67
RS600 *best ratios* 2.80, 1.99, 1.33, 1.0, .67

Hope this helps to give you and everyone else here more insight to the RS, and more choices.