tuck

Hi everyone! I'm new to this forum. I am working on finishing up dads 73 Nova for his 60th birthday. The project that is giving me the biggest headache on his car is tucking the rear bumper. I read every thread on this site I could find regarding tucking the rear bumper. Here is what I have...

Does anyone have an idea where to look for info on how to tuck the front bumper on a 73 Ventura? I've tried dozens of google searches and only turned up how to tuck the rear bumper. I've seen cars on Ventura specific sites with tucked bumpers but no info on how it was done. I have the GM parts...