I installed my own Revtec 3" lift to fit my 285 BFG AT's. It took about 12 hours without air tools. Compressing the springs was a PITA. Turns your arms into spaghetti after cranking spring compressors that much. No trimming needed nor was there any rubbing at full lock. It only costs me about 1 mpg on the 4Runner. As a daily driver I was squeezing 21 mpg out of it. On Engineer Pass above Ouray in 4 low it'll get 14 mpg. That was running them at 42 psi on the street and Aired down with my Staun's deflators at 14 on the rocks.
Tell me about it, I got kind of scared thinking that the springs would just pop out of the el cheapo compressor I got from harbor freight :/
