Eddie,
I am pretty sure that the Grade 8 and Metric 10.9 are almost identical strengths.
http://www.boltdepot.com/fastener-information/materials-and-grades/bolt-grade-chart.aspx
I was looking to replace the hardware since the grade 8 bolts seem to have a better fit. I know what slop in a system can do. I know you are not a fan of the AEV "lift kits" because the large use of brackets. I liked the AEV lift because you get progressive springs and shocks and do a good job of keeping the lift under 3". If you were to get a kit under $1500 including everything that offered an excellent on road ride and 2.5" of lift, but not to much that I need to change my drive shafts? I am totally open to suggestions, but I am not looking to upgrade in the future or go higher. My wife is already weary because she is only 4'9" and has a hard time getting in. So this will be a one and done lift.
To address the teraflex suggestion I have read that their kits have a tendency to sag. If this is unfounded I am all ears. I think part of the problem is there are so many options one can be overwhelmed and after reading so many reviews that this kit just works it makes you lean in that direction.
Thanks for all the help
Vince