Well I have 2 1/4 inch drop spindles on the front and 4 in drop springs on the back of my 67 and they ride very good not to bouncy I got mine at
http://www.mcgaughysclassic.com/
They where very prompt and knew what they where talking about
hope this helps....
David M
Proud Owner
Of A 67 C10
Heres my truck so u can See
http://67-72chevytrucks.com/vboard/s...threadid=74108