Borgeson steering shaft length

I am having my mechanic install a rebuilt steering rack from Rob Grady next week. I also purchased the Borgeson universal joints and steering shaft from DMC. I think I saw in other posts that the shaft needs to be at or close to 11-1/2 inches in length (is that the total length, or length between the u-joints, where the splined ends are inside the joints?) However, measuring the shaft I received from DMC, it is a total length of 13 inches, including the two splined ends. The smooth portion, minus the splined ends , measures 11-1/4 inches. Does my mechanic need to cut that 13 inches down to 11-1/2, or is the shaft the correct length, as is from DMC, to install? Thanks!

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Originally Posted by sweetp01569

I am having my mechanic install a rebuilt steering rack from Rob Grady next week. I also purchased the Borgeson universal joints and steering shaft from DMC. I think I saw in other posts that the shaft needs to be at or close to 11-1/2 inches in length (is that the total length, or length between the u-joints, where the splined ends are inside the joints?) However, measuring the shaft I received from DMC, it is a total length of 13 inches, including the two splined ends. The smooth portion, minus the splined ends , measures 11-1/4 inches. Does my mechanic need to cut that 13 inches down to 11-1/2, or is the shaft the correct length, as is from DMC, to install? Thanks!

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Reading some more, but not sure I trust the AI results from Google, it indicates that 11.5 inches is required when using the vibration dampening U-joint from Borgeson. It says the 13 inch shaft supplied with the non-dampening u-joints from DMC, which I have, is engineered to fit without any cutting. Can someone please confirm? Thanks!