Quote: Picked up a Late B big block parts car the other day, with this:
In 1997 when I swapped my 68-72 biscuit style K-member to a 73-76 spool mount, there were cracks around the frame where the two rear K-member bolts go into. There is a square nut welded instid the frame. The cracks were right under the edges of those nuts.
Cracks were on two and even three! sides of the nuts. Then some cracks spread up the sides of the frame rail.
