Is notching the cab manditory on a c-10

Edited: 11/2/2004 12:56:41 AM by GonnaDragAn87

i have an 87 c-10 longbed and i was looking on fbiminis.com and they have a how to right up on a 70's c-10. On page 2 of their how to they notch the cab and the cross member. Will i have to do that on my 87?