My 67 build and I have a few questions

[2500HD]

The suspension, steering, brakes and rear end are all new a completed brfore the truck was taken apart.

I will be doing the following before it goes back to the painter. Am I forgetting anything?

1. Cab/Bed/Radiator mounts from ECE
2. Radiator (4 row) from family friend
3. Electric fan specifically for the 67-72 from Old Air Products
4. Radiator upper and lower mounts -- factory radiator was a 3 row
5. Bolt in C-notch from CPP
6. Blazer tank kit from CPP
7. Hidden hitch from CPP
8. The truck will be bagged at some point and I recall that a large hole needs to be drilled somewhere. Can anyone tell me exactly where?

I have dealt with ECE but not CPP. Is CPP gppd to deal with?

Any other input on what needed to be done before it goes back to the painter?