My truck had an 11" clutch when I bought it. Still running the 6 volt starter on a 12 volt system, no problems with that. The problem comes with clearance when installing the fork in the bell housing. You will probably need a shorter ball stud. Mine was assembled the way I learned in high school where you loosen the bell housing bolts as far as possible, slip in the fork, then tighten the bolts with an open end wrench 1/12 of a turn at a time. Ugh!


Fred
52 3600
69 C-10