I have my frame about 15 miles, the guy to sandblast it, he says today, but now he wants to do it on thursday. After tornados and hail all weekend, with my 40' body on a dolly in the driveway. I put carpet on top of it, tied it to the dolly with strong supports and 8' x4"x4", I was very nervous about that, the wind was running 30 mph. I miss my frame, I pulled the chunk, the gear is 9" 3.7. The Cadillac has 375 hp with a RV cam, 475 torque. The 3.7 was with a 305 and 3 speed saginaw with overdrive. I have 2 chunks, 2.73 or a 3.08. I will probably the 2.73.