1/2" More lift?

The 888 coils might be better since it gives you an extra half inch of lift at the lowest setting. This would require less preloading to get your desired lift.

 

You can't really preload the 5100 and the 88* coil. Its not recommended. Know what the weight is your trying to support and get the proper length and spring rate for your intentions with the truck.

 

I wonder how the 5100 with 888's would compare to what I have now. I would assume there would be more lift there.

 

I am not certain, but most go with the 887 that have similar weight and get about 2 1/4 inches I believe. There is a huge thread on the 887 coils. Try a search for it. I would but in a bad location at work on my cell.
Edit.... best I can do right now
https://www.tacomaworld.com/search/6895148/?q=887&t=post&o=date&c[title_only]=1

 

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Thank you so much for your recommendation @sdsurfer and @JaCado