[blykins]

I'm a supplier for Tremec along with a myriad of other drivetrain part manufacturers. I'd be glad to help you with any questions that you have.

The TKO 500 is rated for 500 lb-ft of continuous torque. Likewise, the TKO 600 is rated for 600 lb-ft. There is only $90 between the two.

Here's the flowchart that I usually use in my brain for helping customers with their drivetrain packages:

If you have an existing small block Toploader setup with a lower horsepower engine, it's worthwhile to look at the 500, since you can reuse your clutch components.

Otherwise, it's worth the extra $90 to have the extra 100 lb-ft of torque capacity. The clutch components are generally the same price.

Again, feel free to email me or call: 502.759.1431 We can discuss bellhousing requirements, transmissions, and clutch components. Everything can be perfectly matched to your particular combination.

I give a discount to Club Cobra members and the larger the package, the more I'm able to discount.