If you're installing crossover steering on your 79-85 4wd Toyota you're going to need to mount an IFS steering box. This frame mount kit includes both inner and outer frame reinforcing plates, grade 8 bolts, DOM tubing, and Crimp nuts. Inner plate is 1/4, outer plate is 3/16". Angled leading and trailing edges prevent frame cracking. Heavy duty design. No questions asked, lifetime warranty.