I agree. Had a issue with my 72' Dodge Van with a 70' 340 installed. I installed TA 50's on the front and larger TA 50's on the rear. After a while the steering felt loose. I crawled under the van and had someone move the steering wheel left and right and noticed that there was no play on any parts, but the steering gear box was moving. After a further inspection, I noticed a crack in the frame where the gear box connects to it. Had it welded but cracked again. I then added extra metal to the frame and that solved the problem. Most street cars, trucks or vans were not designed to be raced or to add aftermarket products. When doing so you may have these issues. Worn or bad parts are the first thing I look for. The second thing is, whatever I or someone else just did, may be in era. Before you buy, CHECK!!!!!