Pete's L48 - beautiful survivors!!
Maroman - yes, the 126.5/8" would be the length of the stripe. I should have searched and got my facts correct, rather than trying to remember (which can be vague at best, sometimes).
On page Z21 A1 (in the AIM) the start of the Z21 pinstripe is -48.437 from the firewall, unless you had the SS/RS option, where the start of the Z21 stripe would be -44.125" from the firewall to allow for the bumble bee stripe. On page UPC 11-13 B8 of the AIM, it shows the fire wall as being reference "0.00" for measurements. Every time I open the AIM, I learn something new!