Considering Holley sniper EFI for my 1969 340. Thoughts from people who have that set up?

Any ways to do this if I don't trust my welding enough for a fuel tank? Haha! This is a great idea and lets you use easily available and robust oem pumps.

Couple of things to be aware of:

The C5 Camaro uses PWM for fuel pressure control so what looks like a FPR on the bottom of the module is actually just a safety valve. If you wire up the module with constant power, it will max out the fuel pressure. So you either have to run PWM controls or swap in an actual FPR with the following part to function correctly:

www.vaporworx.com

Fuel Pressure Regulator Adapter - Gen5/6 Fuel Module - VaporWorx

Convert the Gen5 Camaro SS fuel pump to 60psi! For use with Gen4 Camaro 4bar/58psi pressure regulators ONLY on Gen5/6 Camaro SS fuel modules. Also fits Gen6 Camaro and CTS-V3 (2015+) fuel modules.
www.vaporworx.com www.vaporworx.com

At least the part is only $15.

Also, the pump is on the short side for the A-Body tank. As I recall, I was able to add some spacers over the springs on the rods to get it to work, but the wires for the pump are too short then. I bought a couple of wire splices from Vaporworx to extend the wires but I suspect they aren't anything special.

The Gen6 Camaro is taller but the hat is rotated 180 degrees compared to the Gen5 module. Might be a better fit, and I know I was able to free the module rods from the housing on my Gen5 module so maybe the hat could be rotated.

https://www.vaporworx.com/wp-content/uploads/2016/01/Fuel-Module-Dims.pdf