Jerry, you can buy an inexpensive ratcheting 20-150 ft-lb torque wrench at Harbor Freight. I know it's probably not a "precision" tool, but I think it will set the torque close enough that the error won't matter. It's what I use. I just checked online and it's less than $30. There is also one at Home Depot that is in the mid $70s.

And, you can buy just a single 1/2 drive socket that will fit the lug nuts too. I think I got mine at Home Depot. Harbor Freight sells sets, if you need other sizes too.

Edit: If you've never used a torque measuring wrench, you apply steady, even pressure until it "clicks". Don't "jerk" it to tighten the nut, that will over-torque the fastener. And, you don't lubricate the threads of the lugs, they are supposed to be dry.

- Jack