70 Blazer with later style GM seatbelts

[cpavelko]

Got these seatbelts from a '72 Caddy 2 door this weekend at the junk yard. Installed them last night except the shoulder harness part. You can see where I was thinking of mounting them to the roll bar. Deciding if I can deal with the fact that they restrict you from leaning forward being that there is not retractor on them. Has anyone seen someone use the later version of these with the full retractor(74 and later cars / trucks)?